The 57th presidential inauguration took place in Washington DC today, but the fun got started over the weekend with stars stepping out to show their support at multiple events. Sophia Bush and Rosario Dawson celebrated leading women in Washington on Sunday, while Chrissy Teigen and John Legend cozied up at the hip-hop inaugural ball that night. Eva Longoria shared the stage with Vice President Joe Biden at the Latino inaugural event yesterday before bundling up in a pink coat for the official inauguration festivities. Beyoncé Knowles and Jay-Z were on hand for the main event, since Beyoncé had the honor of singing the national anthem in front of the massive crowd. Katy Perry and John Mayer were also spotted in the audience following Katy's performance at the Kids' Inaugural Concert. There's been plenty of star power so far with even more expected at this evening's many inauguration balls — see all the famous faces in attendance now!