Miranda Cosgrove gets decked out in Theory for a new feature for ELLE mag.

Styled by Joe Zee, the 18-year-old actress debuted pieces from Theory artistic director’s Olivier Theyskens first collection.

In other Miranda news, ET caught up with the star on the set of iCarly when Jim Parsons was filming his scenes for an upcoming episode.

“I love Jim Parsons, he is the sweetest guy ever and he is really funny,” she dished. “Everybody was so excited to have him here. The last few weeks when we found out he was going to be on the show everybody’s been freaking out.”

Bigger pic inside…