Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge with Prince Harry Attend The Charities Forum Event at Paddington Station on October 16, 2017 in London, England.

The Duke and Duchess of Cambridge and Prince Harry attended the Charities Forum event, joining children from the charities they support onboard the Belmond British Pullman train at Paddington Station and meeting the cast and crew from the forthcoming film Paddington 2

Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge and Prince Harry speak with Actor Hugh Bonneville as they arrive arrive to attend the Charities Forum event, to join children from the charities they supports onboard the Belmond British Pullman train and to also meet the cast and crew from the forthcoming film Paddington 2 at Paddington Station on October 16, 2017.

The Duchess of Cambridge appeared to have gone for the chop as she showcased a glossy new hairstyle, as she attends the Charities Forum Event on board the Belmond Britigh Pullman train at Paddington Station on October 16, 2017 in London, England.

The Duchess of Cambridge displayed a hint of a baby bump and a fresh new haircut in an Orla Kiely dress as she meet the cast and crew from the forthcoming film Paddington 2 at Paddington Station

Catherine, Duchess of Cambridge was treated to a tour of the train by one of the charity's ambassadors and chatted away to little boys and girls on board

The Duchess of Cambridge speaks to children from the charities she supports onboard the Belmond British Pullman train at Paddington Station in London

Catherine, Duchess of Cambridge may well be suffering from severe morning sickness but she didn't let that get in the way of her fun as Prince William, Duke of Cambridge looks on, during charity event in London

The Duchess of Cambridge, who is expecting her third child with Prince William on right, showcased her dance skills as she let Paddington Bear twirl her around during a charity visit to Paddington station in London on October 16, 2017

Catherine, Duchess of Cambridge's tiny bump was slightly pronounced as she chatted away to a life-size Paddington toy, alongside with her husband Prince William, Duke of Cambridge and Prince Harry.

Catherine, Duchess of Cambridge was in a jubilant mood as she shook hands with a person in a Paddington Bear outfit along with her husband Prince William, Duke of Cambridge as they attended a charities forum event at Paddington train station in London

Prince Harry also got a chance to meet the bear as he attended a charities forum event at Paddington train station in London

Catherine, Duchess of Cambridge was the dancing queen as she sashayed with the bear at the train station on October 16, 2017. As her husband Prince William, Duke of Cambridge looked a little amused as he enjoyed his wife's moves.

 Catherine, Duchess of Cambridge dances with Paddington Bear, watched by Prince William, Duke of Cambridge and Prince Harry as they attend the Charities Forum Event at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge was the star of the show at Paddington station as she let the giant bear spin her around before a crowd of impressed onlookers.

The Duchess of Cambridge proved she has rhythm as she boogied with the bear in front of amused onlookers. Despite wearing heels, The Duchess still managed to pull off the dance moves with aplomb

Prince William, Duke of Cambridge greeted children supported by charities in the The Charities Forum aboard Belmond British Pullman train during an event at Paddington train station in London

Actor Hugh Bonneville (left) walks with the Duke and Duchess of Cambridge, Simon Farnaby and Prince Harry as they arrive at Paddington Station in London, to join children from the charities they support and meet the cast and crew from the forthcoming film Paddington 2

Catherine, Duchess of Cambridge meets Paddington Bear at the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge displayed the tiniest hint of a baby bump in her chic Orla Kiely dress - one of her favorite designers, as he joined her husband Prince William, Duke of Cambridge and Prince Harry during a charity visit to Paddington station in London

The Duchess of Cambridge couldn't control her amusement as she met the bear on her way to the Charities Forum event

Catherine, Duchess of Cambridge was charmed by the bear as she and her husband Prince William, Duke of Cambridge chatted away to the life-size figurine at Paddington train station on October 16, 2017

Catherine, Duchess of Cambridge and Prince Harry attends the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge proved she has rhythm as she boogied with the bear in front of amused onlookers and her husband Prince William, Duke of Cambridge

Catherine, Duchess of Cambridge showcased her trim and toned figure in a chic pink Orla Kiely dress with floral detailing and a flattering black waist band as she boogied with the bear in front of her amused husband Prince William, Duke of Cambridge

Catherine, Duchess of Cambridge appeared to be having an animated chat with the bear as well- wishers lined the station to greet her and Prince William, Duke of Cambridge and Prince Harry (not seen)

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

The pregnant Duchess of Cambridge was all smiles as she and Prince William, Duke of Cambridge was greeted by Paddington Bear at London Paddington station on October 16, 2017 - and displayed her baby bump in a peach Orla Kiely raised flower fitted dress

Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge and Prince Harry were greeted by Paddington Bear as she arrives to attend the Charities Forum event, to join children from the charities they supports onboard the Belmond British Pullman train and to also meet the cast and crew from the forthcoming film Paddington 2 at Paddington Station on October 16, 2017.

Catherine, Duchess of Cambridge couldn't hide her laughter as the furry bear planted a kiss on her hand as her bemused husband Prince William, Duke of Cambridge looked on during their charity visit on October 16, 2017

Britain's Catherine, Duchess of Cambridge, laughs as she meets a person in a Paddington Bear outfit as she attend a charities forum event at Paddington train station in London on October 16, 2017.

Catherine, Duchess of Cambridge debuted a glossy and shorter hair 'do that was timeless and flattering as she attends the charity event in London. It was markedly shorter than the style she showed off last week at a reception at Buckingham Palace

Catherine, Duchess of Cambridge in a pretty pink floral number by Orla Kiely with Prince Harry for the Charities Forum event at Paddington Station.

Cheerful Catherine, Duchess of Cambridge offset her peachy look with simple black stilettos and a matching black clutch. She accessorized with dazzling drop earrings as she joined her husband Prince William, Duke of Cambridge and brother in- law Prince Harry (L) at charity event in London

Catherine, Duchess of Cambridge was the dancing queen as she sashayed with the bear at the train station on October 16, 2017 while Prince Harry and her  husband Prince William (1st-R) looked a little amused as he enjoyed his wife's rendition.

Catherine, Duchess of Cambridge dances with Paddington Bear as she attends the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Prince Harry looked dapper as he attended the event hosted by StudioCanal, with support from BAFTA through its BAFTA Kids programme

The Duchess of Cambridge made a surprise appearance at a charity event with the Duke of Cambridge and Prince Harry on October 16, 2017. Although she's been suffering with morning sickness, she looked just peachy in a designer pink Orla Kiely raised flower fitted dress for the occasion

Britain's Catherine, Duchess of Cambridge, laughs as she arrives to attend a charities forum event at Paddington train station in London on October 16, 2017.

Britain's Catherine, Duchess of Cambridge attends a charities forum event at Paddington train station in London on October 16, 2017.

Catherine, Duchess of Cambridge arrives to attend the Charities Forum event, to join children from the charities she supports onboard the Belmond British Pullman train and to also meet the cast and crew from the forthcoming film Paddington 2 at Paddington Station on October 16, 2017.

(R-L) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge with Prince Harry attend the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

(R-L) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge with Prince Harry attend the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge attends the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge in an AW13 Orla Kiely dress, which was £348 at the time of purchase, was blooming. With its pink raised flower power motif and contrasting black bow detail waist, this dress has a Sixties feel about it, attends Charities Forum event at Paddington Station.

Catherine, Duchess of Cambridge attends the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge with Prince Harry are joined by Paddington Bear at the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge in a pretty peach Orla Kiely raised flower fitted dress. With its pink raised flower power motif and contrasting black bow detail waist, the pencil skirt and three quarter length sleeves lend it an elegant edge, as she attends for the Charities Forum event at Paddington Station.

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge with Prince Harry are joined by Paddington Bear at the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge dances with Paddington Bear at the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge with Prince Harry are joined by Paddington Bear at the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge in a pretty pink floral dress by Orla, she offset her peachy look with simple black stilettos and a matching black clutch. She accessorized with dazzling drop earrings, as she attends for the Charities Forum event at Paddington Station.

 Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge with Prince Harry attend the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge displayed a hint of a baby bump in a peach floral Orla Kiely fitted dress as she arrived at Paddington Station

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Prince William, Duke of Cambridge meets Paddington Bear at the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

 Catherine, Duchess of Cambridge attends the Charities Forum Event on board the Belmond Britigh Pullman train at Paddington Station on October 16, 2017 in London, England.

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Charities Forum Event on board the Belmond Britigh Pullman train at Paddington Station on October 16, 2017 in London, England.

(L-R) Hugh Bonneville, Prince Harry, Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

(L-R) Prince Harry, Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge attends the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge attends the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Paddington Bear and Prince Harry attend the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge meets Paddington Bear as she attends the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge dances with Paddington Bear, watched by Prince William, Duke of Cambridge and Prince Harry as they attend the Charities Forum Event at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge dances with Paddington Bear as she attends the Charities Forum Event at Paddington Station on October 16, 2017 in London, England

Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge meet Paddington Bear as she attends the Charities Forum Event on board the Belmond British Pullman train at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge, Paddington Bear and Prince William, Duke of Cambridge attend the Charities Forum Event at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge, Paddington Bear and Prince William, Duke of Cambridge attend the Charities Forum Event at Paddington Station on October 16, 2017 in London, England.

(L-R) Paddington Bear, Prince Harry, Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend the Charities Forum Event at Paddington Station on October 16, 2017 in London, England.

(L-R) Paddington Bear, Prince Harry, Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend the Charities Forum Event at Paddington Station on October 16, 2017 in London, England.

(L-R) Prince Harry, Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend the Charities Forum Event at Paddington Station on October 16, 2017 in London, England.

Catherine, Duchess of Cambridge displayed her baby bump in a peach floral Orla Kiely dress as she attends the Charities Forum Event at Paddington Station on October 16, 2017 in London, England

Catherine, Duchess of Cambridge displayed a hint of a baby bump in a peach floral Orla Kiely dress as she arrived at Paddington Station