Paris Hilton Peter Pan Pain Relief Center

On Friday afternoon Paris Hilton and her beloved pooch Peter Pan ran errands in Beverly Hills, and the heiress flashed us her megawatt smile before hopping in her hybrid SUV.

P got back from Miami on Wednesday after spending the last few days at the Ultra Music Festival, but it wasn't all a vacation -- she was working on her new album with Birdman and she made an appearance at the American Humane Society award ceremony luncheon.

Between that and her trips in Germany and the Philippines over the last few weeks, we bet she's exhausted ... sounds like a few hours at the spa might be in the cards this weekend!