Last Night's Look: Love It or Leave It?See Katharine McPhee in a plunging dress and Lupita Nyong'o in a shimmering number at the PEOPLE/TIME party in D.C., plus more stars on the red carpet. Then vote – fashion-forward or fashion fail

EMMY ROSSUM

The actress flashes some skin in a one-shoulder white Lanvin dress featuring a thigh-high slit, accessorizing with a Christian Louboutin clutch and heels at the Lanvin and Living Beauty Host an Evening of Fashion bash in L.A.