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

KATHARINE MCPHEE

The actress helps kicks off Nerd Prom at the PEOPLE/TIME White House Correspondents' Dinner cocktail party in D.C. wearing an embellished black-and-maroon Katharine Kidd dress with a sheer panel at the (very plunging) neckline.