Cara Delevingne Celebrates 30th Birthday with Star-Studded Boat Day Including Margot Robbie & More (Photos)

Cara Delevingne had her famous pals by her side while ringing in her 30th birthday!

The model and actress was joined by celeb friends like Margot Robbie and Sienna Miller while hanging out on a boat on Friday (August 12) in Formentera, Spain.

Joining in on the fun were Cara‘s older sister Poppy Delevingne, model Adwoa Aboah, Lady Mary Charteris, and more.

The stars were all seen taking a dip in the water and relaxing in the Mediterranean Sea. When it came time to have cake, Cara looked like she was having a blast while smearing frosting over her lips and trying to rub it on Adwoa‘s face.

Cara, Margot, and the group were also spotted together on Thursday.

Click through the gallery for 200+ photos from Cara Delevingne’s birthday boat day…