Who WASN'T at Riccardo Tisci's Birthday Party?
It goes without saying that a birthday boy like Riccardo Tisci can really fill out a venue. And he proved that point in a big way this weekend when the soon-to-be-40 star had the party of a lifetime with guests like Kim Kardashian, Jessica Chastain, Jared Leto, and Diddy in attendance. Ibiza is known for wild parties and late nights, and this weekend was no exception. Read on to see the inside-party snaps, see the celebrity birthday wishes, and feel a tinge of envy at the Givenchy artistic director's towering birthday cake.