Mary-Kate Olsen: Rooftop Rocker

For the most part, she avoids public appearances like the plague. But last night Mary-Kate Olsen was all about getting her groove on at a pre-Fashion Week bash.

The “Full House” hottie showed up at Dazed & Confused magazine’s MINI rooftop bash, held at a converted loft space in New York City, and she was ready to party.

Sporting an Austrian-style mountain coat and a fringed-out handbag, the pint-sized actress rocked out to the psychedelic grooves of MGMT, dancing along to the music.

Prior to the concert, Mary-Kate was seen sipping a beer and hanging out in the grass, talking to some friends that showed up.

Gossip Girls

Enjoy the pictures of Mary-Kate Olsen at the opening party for "Mini Rooftop NYC" (September 4).