Kim Kardashian, Kanye West and a whole lot of Givenchy! The parents-to-be hit the red carpet at the Met Gala each wearing custom designs by the French label. Kim showed off her baby bump in a long flower-print jersey dress with a thigh-high slit! Kim had her dress completely altered at the last minute because her stylist doesn't want her to show off her arms anymore since she's gained weight during the pregnancy. Kanye also serenaded his baby mama during his performance-- too cute!.