Guess Who Wore a Sexy Backless Dress?

Happy Monday! Time for a quiz.
Question 1 of 10
Guess who wore an open-backed dress? Source: http://feedproxy.google.com/~r/popsugar/~3/6gckUsO_azs/Celebrity-Quiz-Game-Aug-22-2011-18838305
Heidi Montag Simone Mütherthies Haylie Duff Amy Smart China Chow