Margot Robbie celebrates her pal Cara Delevingne's 30th birthday at a yacht party in Spain

Lady Mary Charteris shows off her impressive abs in an orange bikini at Cara Delevingne's birthday

Cara Delevingne joins A-list pals on a yacht trip in Spain to ring in her 30th birthday

Beach Day! Cara Delevingne and Margot Robbie Soak Up the Sun in Spain: Photos