It was a who’s who of journalists and Washington, D.C. insiders last night at the annual White House Correspondents’ Association Dinner, but we were a little blinded by the star power. Everyone from TV actresses to movie stars and even a bevy of models hit the red carpet inside the Washington Hilton gearing up to listen to both President Obama and Saturday Night Live’s Cecily Strong crack wise to the crowd. The variety of dresses at this year’s so-called Nerd Prom added some spice to the proceedings with attendees stepping out in a mix of rich colors and stark neutrals. Looks were relatively conservative by Hollywood standards, though a few bold souls played a bit of peekaboo working significant slits, sheer accents and revealing necklines. Scroll through the slideshow above to see what the celebs wore in Washington.