Mischa Barton's fashion sense has come a long way in recent months, and wow, she's looking fit and fabulous.

The former OC actress, wearing black tights and short shorts, hit up the Music Box Theatre in Hollywood to catch Morrissey in concert.

The leggy actress wasn't the only celebrity in attendance. Showing off her slender post-baby bod in an all-black ensemble paired with killer boots, Kimberly Stewart also enjoyed the show and took a night off from watching 3-month-old daughter Delilah. Perhaps the baby was home with daddy Benicio Del Toro?

Girls just wanna have fun!