The Duke and Duchess of Cambridge Attend the Tusk Conservation Awards at Banqueting House on November 8, 2018 in London, England.

Catherine, Duchess of Cambridge wearing a Jenny Packham teal color custom pleated dress with lace detailing and belted waist, carrying custom-made clutch bag. She accessorizes with a pair of dazzling chandelier diamond earrings and a pair of £450 'Vamp' sandals from Jimmy Choo as she attends the Tusk Conservation Awards 2018 in central London

Catherine, Duchess of Cambridge opted for a Jenny Packham dress as she joins Prince William, Duke of Cambridge at the Tusk Conservation Awards 2018 in central London

Catherine, Duchess of Cambridge in a sea green floor-length lace gown by British designer Jenny Packham for the event this evening which she had initially worn six years ago as she joins Prince William, Duke of Cambridge at the Tusk Conservation Awards 2018 in central London.

Catherine, Duchess of Cambridge's custom-made clutch bag detail and spotted wearing a small band-aid on her middle finger during the Tusk Conservation Awards 2018 at Banqueting House in London, England. 

Catherine, Duchess of Cambridge spent time talking chief executive of Tusk, Charles Mayhew, before entering the event in central London.

Catherine, Duchess of Cambridge opted for a loose waves hairstyle as she attends the Tusk Conservation Awards 2018 in central London

Catherine, Duchess of Cambridge attends the event at the Tusk Conservation Awards wearing Jenny Packham lace detailing pleated teal dress, she added a  bejeweled waistband, as she attends the Tusk Conservation Awards 2018 in central London

Prince William, Duke of Cambridge put on a dapper display in a tux as he joined his wife Catherine, Duchess of Cambridge on the red carpet, both of whom wore a remembrance poppy ahead of armistice day.

Catherine, Duchess of Cambridge stunned in a teal blue ball gown by British designer Jenny Packham. The tiny gems in the delicate lace across her back and shoulders shimmered as she made her way into the banqueting hall with dapper husband Prince William, Duke of Cambridge at Banqueting House in central London

Catherine, Duchess of Cambridge looked stunning in a sea green floor length lace Jenny Packham gown as she joined Prince William, Duke of Cambridge who looks dapper in a tux on their way to meet the award nominees at the Tusk Conservation Awards 2018 at Banqueting House, London

Catherine, Duchess of Cambridge wore a pair of dazzling pair of chandelier diamond earrings and a further element of sparkle was added in the form of her bejeweled waistband

Catherine, Duchess of Cambridge opted for the same £450 'Vamp' Jimmy Choo sandals that she wore the first time she stepped out in this stunning Jenny Packham dress, joined her dapper husband Prince William, Duke of Cambridge at the Tusk Conservation Awards 2018 at Banqueting House, London

Catherine, Duchess of Cambridge wore a pair of dazzling pair of chandelier diamond earrings, carried a custom-made clutch bag and opted for a loose waves hairstyle for this evening's event in London.

Catherine, Duchess of Cambridge was seen carefully making her way to the event in her silver killer Jimmy Choo heels, careful not to be tripped up by her flowing sea green floor-length lace gown.

(2nd-L) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge (2nd-R) looked to be having a whale of a time as they were seen laughing happily at the star-studded event

Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge spent time speaking to other charity members who put on the charm offensive while greeting the Duchess of Cambridge.

Catherine, Duchess of Cambridge (C) and Prince William, Duke of Cambridge (3R) posed for a commemorative photo with other members of the charity during the reception for the evening event at Banqueting House in London, England

(L-R) Prince William, Duke of Cambridge gave the beaming ranger Julius Obwona a hearty handshake while he collected his Tusk Wildlife Ranger award during the evening's ceremony in London.

Julius Obwona took to the stage where he thanked the audience for his Tusk Wildlife Ranger Award and addressed the charity's important causes as Prince William, Duke of Cambridge (2L) and Kate Silverton (L) looks on.

Prince William, Duke of Cambridge was joined on stage by newsreader Kate Silverton to present the Tusk Wildlife Ranger Award to Julius Obwona (seen)

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge could be seen laughing and joking while speaking to fellow attendees during a drinks reception at Banqueting House in London, England.

Prince William, Duke of Cambridge (L) and Catherine, Duchess of Cambridge (C) attend The Tusk Conservation Awards 2018 at Banqueting House in London, England.

Catherine, Duchess of Cambridge first wore the teal Jenny Packham gown in 2012 to a gala event at the Royal Albert Hall to mark the countdown to the London Olympic Games. Pictured: The Duchess of Cambridge at the gala six years ago

Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend the Tusk Conservation Awards 2018 at Banqueting House in London, England.

Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend the Tusk Conservation Awards 2018 at Banqueting House in London, England.

Prince William, Duke of Cambridge put on a dapper display in a tux who wore a remembrance poppy ahead of armistice day.

Catherine, Duchess of Cambridge in a sea green floor-length Jenny Packham lace gown as she joins Prince William, Duke of Cambridge who looks dapper in a tux at the Tusk Conservation Awards in central London

Prince William, Duke of Cambridge attend The Tusk Conservation Awards 2018 at Banqueting House in London, England.

Prince William, Duke of Cambridge on stage delivers a speech during The Tusk Conservation Awards 2018 at Banqueting House in London, England.

Prince William, Duke of Cambridge on stage delivers a speech during The Tusk Conservation Awards 2018 at Banqueting House in London, England.

Catherine, Duchess of Cambridge looked stunning during the Tusk Conservation Awards 2018 at Banqueting House in London.

Catherine, Duchess of Cambridge looked stunning in Jenny Packham lace dress as she joined Prince William, Duke of Cambridge at the Tusk Conservation Awards 2018 at Banqueting House in London

Catherine, Duchess of Cambridge wearing a Jenny Packham teal color custom pleated lace dress and belted waist, carrying custom-made clutch bag. She accessorizes with a pair of dazzling chandelier diamond earrings and a pair of £450 'Vamp' sandals from Jimmy Choo as she attends the Tusk Conservation Awards 2018 in central London

Catherine, Duchess of Cambridge stunned in a teal blue Jenny Packham lace gown, she added a sparkling belt as she attends the Tusk Conservation Awards 2018 at Banqueting House in central London

Catherine, Duchess of Cambridge opted for a Jenny Packham dress as she joins Prince William, Duke of Cambridge who looks dapper in a tux at the Tusk Conservation Awards 2018 in central London

Prince William, Duke of Cambridge seen attending Tusk Conservation Awards - ceremony & dinner at Banqueting House on November 08, 2018, in London, England.

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge seen attending Tusk Conservation Awards 2018 - ceremony & dinner at Banqueting House in London, England.

Catherine, Duchess of Cambridge in a sea green floor-length Jenny Packham lace gown for the event at the Tusk Conservation Awards 2018 at Banqueting House, London

Catherine, Duchess of Cambridge, spotted wearing a circular band-aid on her middle finger during the Tusk Conservation Awards 2018 at Banqueting House in London, England.