Weddings with the Biggest VIP Guest Lists

From Jennifer and Justin's intimate affair to George Clooney's Italian bash, see which star nuptials brought out a who's who of Hollywood

THEIR GUEST LIST

Levine's childhood pal Jonah Hill officiated the moving ceremony, which the equally funny Jason Segel attended, too. Maroon 5 musicians James Valentine and Jesse Carmichael jammed with Stevie Nicks during the reception, while Robert Downey Jr. and supermodel Coco Rocha (plus their dates) danced the night away.