The House actress was chic in her Giambattista Valli jumpsuit at a fashion event last December, while the fashionista wore her wide-legged one-piece out to dinner in London this week.


The actress sizzled in her Marchesa mini at an Oscars party in February, while the singer got pretty in pink at a Lifetime Rock the Vote party in August in her beaded dress.


n a real-life faceoff, both actresses turned up to the Tracy Reese show in the same two-tone dress from the N.Y.C. designer!


It's 90210 vs. The Hills – on the same night! Doherty wore her red Richard Ruiz to The Late Show with David Letterman while Conrad sported the black version to a Nylon party.


The Project Runway host was glam in her Roland Mouret dress at the Peabody Awards, while the new mom showed off her slim shape at the Marc Jacobs show in N.Y.C. this week.