Beatrice Borromeo-Casiraghi of Monaco looked stunning in a red Giambattista Valli ball gown at Monte Carlo Sporting for the Bal de la Rose in Monaco on Saturday. This is the first time that the newly minted princess made her debut at the Rose Ball as Mrs Casiraghi. Beatrice, who is married to Pierre Casiraghi, has been attending the ball since 2009.

The annual rose ball was a special occasion for the Italian heiress, as it was her first as part of the royal family. The 30-year-old royal pulled all stops for the gala night. She wore an extravagant red strapless Giambattista Valli ball gown.

Beatrice gave a nod to her homeland by wearing Valli. The stunning number featured a voluminous tulle ruffled skirt and flowing train which made her the showstopper at the ball. The dress is from the Italian label’s Spring/Summer 2016 couture collection (Look 41). She accessorized with only a striking diamond necklace and matching earrings and bracelet.

The princess styled her long locks swept up into a messy chignon. The fringes fell on her forehead framing her face. Beatrice’s make-up was flawless with pink blush and deep red lipstick. She also appeared to wear a lot of bronzer as there was a glow about her.

All eyes were on Beatrice and her 28-year-old husband Pierre, the nephew of Prince Albert II and son of Princess Caroline. The night was also special for Princess Alexandra of Hanover, Caroline’s youngest child. The 16-year-old made her debut at the charity event that benefits the Princess Grace Foundation, which was first held in 1954.

Alexandra and the rest of the ladies, including her mom, older sister Charlotte Casiraghi and sister-in-law Tatiana Santo Domingo, wore Chanel on the night. All the women were dressed in neutral and pastel color palettes. Pierre’s older sister Charlotte, 29, wore a white silk gown that featured a cape in sheer fabric.

The sleeveless number featured lace detailing in the front, neckline, sleeves and pockets. She wore white wedge heels. Charlotte accessorized with a bracelet, small stud earrings, and a gold clutch bag with chain detailing. Her brunette tresses were pulled back into a low bun.

Princess Caroline opted for a white sleeveless gown, Tatiana wore a floor-length purple gown with black detailing near the neck and waist. All the gowns for the ladies were by German designer Karl Lagerfeld, who also attended the ball. He was in charge of decoration the Salle des Etoiles in bright and exotic Cuban colors, making it the perfect setting for an exceptionally magical evening.

Though Prince Albert was present, his wife Charlene was noticeably absent. She is believed to have stayed at home caring for her two children, Prince Jacques and Princess Gabriella.