Wedding Guest Style: Would You Wear These Looks?

Leighton Meester's mini, Rachel Bilson's backless dress, Cat Deeley's white suit – are these stars' red carpet outfits appropriate to wear to a wedding? Vote now

MENSWEAR-INSPIRED PANTSUIT

Cat Deeley pairs her white tuxedo with nude heels and a leopard-print clutch while attending a London dinner, but does a wedding call for a dress?