Hilary Duff  baby weight spandex sunglasses drink post baby body hermes Can you say dedication?!

We caught Hilary Duff leaving yet another gym session in Century City on Thursday, and the Lizzie Maguire star sure isn't messing around with her post-pregnancy weight loss routine!

Maybe the 24-year-old new mom is getting her body in tip top shape for a new role?! Mrs. Mike Comrie tweeted, "So excited about my new agents at Gersh! Great meeting today! Now Luca and I are off to the doctor to get his first shot! Poor guy!"

Good thing Hil's hubby just retired from the NHL, because it sounds like his wifey is about to be one busy lady!