Rose Ball 2018 To Benefit The Princess Grace Foundation In Monaco on March 24, 2018

Charlotte Casiraghi, announced her engagement to film producer Dimitri Rassam at the Rose Ball in Monaco last night. Pictured, the couple arriving for the glittering gala

Beatrice Borromeo looked radiant as she joined her husband Pierre Casiraghi at the annual charity gala, pictured.

(L-R) Princess Caroline with Karl Largerfeld and children Charlotte Casiraghi, Pierre Casiraghi, pictured with wife Beatrice Borromeo, and Princess Alexandra of Hanover

Pierre Casiraghi and Beatrice Casirahi at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Beatrice Borromeo appeared to be holding her baby bump as she posed for photos with her husband Pierre Casiraghi and his half-sister, Princess Alexandra of Hanover, ahead of the glittering charity gala, pictured.

Beatrice Borromeo and Pierre Casigrahi looked loved-up as they posed for photos at the ball. Pictured l-r, Princess Caroline, Karl Largerfeld, Charlotte Casiraghi, Pierre and Beatrice, Princess Alexandra

Beatrice Borromeo appears to be expecting her second child with husband Pierre Casiraghi. The mother-of-one showed off a bump in a figure-hugging gown as she joined her husband at the glittering Rose Ball in Monaco last night March 24, 2018

Princess Caroline of Hanover, donned a tiered midi-dress in a soft pink
arrived for the event with designer Karl Largerfeld.

Princess Alexandra of Hanover, looked beautiful in a tweed gown at Monaco's Rose Ball glittering gala event.

Princess Caroline of Hanover arrives at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Princess Caroline of Hanover beaming as she arrived for the black tie event with fashion designer Karl Largerfeld.

Princess Alexandra of Hanover arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Princess Alexandra of Hanover (C) and her boyfriend Ben Sylvester Strautmann (R) arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Princess Caroline arriving for the ball, accompanied by Karl Largerfeld

 Princess Caroline of Hanover, in a tiered midi-dress in a soft pink arrived for the event with designer Karl Largefield

Princess Caroline of Hanover and Karl Lagerfeld arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

(L-R) Princess Alexandra of Hanover,Dimitri Rassam and Charlotte Casiraghi arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco

Princess Caroline of Hanover in a soft pink midi-dress, she accessorized with a pair of diamond drop pearl earrings and oversized starfish necklace, as she posed for photos ahead of the glittering charity gala in Monaco. 

Princess Caroline of Hanover arrives at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Charlotte Casiraghi's classic black velvet column dress was dominated by a feathered one-shoulder strap during the Monaco's charity Rose Ball

Charlotte Casiraghi, who looked sensational in a statement feathered gown by Saint Laurent and tying her brunette locks up in a sleek high-fashion up-do.

Charlotte Casiraghi made a statement in a bold black and white Yves Saint Laurent column dress, was dominated by a feathered one-shoulder strap. She kept the rest of her look simple, opting for a small black leather handbag with chain strap and her hair swept into a sleek updo.

(L-R) Princess Alexandra of Hanover, Dimitri Rassam and Charlotte Casiraghi arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Princess Caroline of Hanover and Karl Lagerfeld arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Pierre Casiraghi and wife Beatrice Borromeo donned matching black ensembles arrives at the glittering Rose Ball in Monaco

Beatrice Borromeo looked radiant arrives at the annual charity gala in Monaco.

 (L-R) Mrs Saint Clair Fredericks, her husband Henry Saint Clair Fredericks aka Taj Mahal, Princess Caroline of Hanover, Karl Lagerfeld, Charlotte Casiraghi, Pierre Casiraghi, Beatrice Casiraghi and Princess Alexandra of Hanover arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

(L-R) Princess Alexandra of Hanover, Dimitri Rassam and Charlotte Casiraghi posed for photos ahead of the glittering annual charity gala in Monaco

Princess Caroline of Hanover beaming in a tiered powder pink dress as she arrived for the black tie event with fashion designer Karl Largerfeld, in Monaco

Princess Caroline of Hanover and Karl Lagerfeld arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Princess Caroline of Hanover in a soft pink midi-dress, she accessorized with a pair of diamond drop pearl earrings and oversized starfish necklace, as she posed for photos ahead of the glittering charity gala in Monaco. 

Princess Alexandra of Hanover attends the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Princess Caroline of Hanover and Karl Lagerfeld arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Princess Caroline of Hanover and Karl Lagerfeld arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Princess Caroline of Hanover in a soft pink midi-dress, she accessorized with a pair of diamond drop pearl earrings and oversized starfish necklace, as she posed for photos ahead of the glittering charity gala in Monaco. 

Princess Alexandra of Hanover and her boyfriend Ben Sylvester Strautmann arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco

(L-R) Princess Alexandra of Hanover, Dimitri Rassam and Charlotte Casiraghi posed for photos ahead of the glittering annual charity gala in Monaco

Beatrice Borromeo, in a figure-hugging gown as she joined husband Pierre Casiraghi at Monaco's annual Rose Ball.

Pierre Casiraghi and Beatrice Casiraghi arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Beatrice Borromeo looked radiant as she posed for photos ahead of the glittering charity gala in Monaco

Beatrice Casiraghi attends the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

(L-R) Princess Alexandra of Hanover, Dimitri Rassam and Charlotte Casiraghi arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco

Dimitri Rassam and Charlotte Casiraghi arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Atmosphere during the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Princess Alexandra of Hanover (C) and her boyfriend Ben Sylvester Strautmann (R) arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.

Princess Caroline of Hanover opted for a softer look in a tiered powder pink dress, carried a metallic silver clutch and accessorized with a pair diamond pearl drop earrings and an oversized starfish necklace, attends the annual charity gala in Monaco

Princess Alexandra of Hanover and her boyfriend Ben Sylvester Strautmann arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco

Princess Caroline of Hanover's light tiers of the mid-length gown swished elegantly as she entered the Monte Carlo Sporting Club, accompanied by Largerfeld, the event's designer. 

Dimitri Rassam and Charlotte Casiraghi looked the picture of happiness as they arrived for the annual Rose Ball in Monte Carlo, with Charlotte debuting a glittering diamond on her ring finger.

Charlotte Casiraghi who looked sensational in a statement feathered gown by Saint Laurent teamed with a small black leather handbag with chain strap and tying her brunette locks up in a sleek high-fashion up-do, attends the annual charity gala in Monaco.

Charlotte Casiraghi made a statement in a bold black and white Yves Saint Laurent creation at the annual Rose Ball 2018 in Monaco

Charlotte Casiraghi's classic black velvet column dress was dominated by a feathered one-shoulder strap. The slight quiff at the front of her hair added a touch of playful edge to the otherwise elegant ensemble.

Charlotte Casiraghi who looked sensational in a statement feathered gown by Saint Laurent teamed with heels, a chain detail handbag and her hair swept into a sleek up-do, arriving for the glittering gala in Monaco

Princess Caroline of Hanover, opted for a softer look in a tiered powder pink dress. She teamed the flirty frock with a pair of rose pink velvet shoes, metallic silver clutch and an oversized starfish necklace, beaming as she arrived for the black tie event in Monaco.

Princess Caroline of Hanover received a bouquet of flowers, as she arrive at the Rose Ball 2018 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 24, 2018 in Monte-Carlo, Monaco.