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

OPEN-BACK FROCK

Rachel Bilson shows some skin in a leather-trimmed Burberry dress paired with Christian Louboutin heels at the Waiting for Forever premiere, but is her flash of skin just right or too much?