article-0-duff460.jpg Little Luca is only three months old, but he's already living the good life!

Hilary Duff is south of the border enjoying a relaxing getaway, and the new mom decided to share some sweet snapshots of her adorable son with her Twitter followers. The 24-year-old posed on the beach in a white t-shirt while sweetly cradling her baby boy, and captioned the photo with a simple "Paradise..." It looks like motherhood is her favorite role yet!

The singer/actress has been showing off her post-pregnancy bod while on vacation, and we're amazed at how quickly she dropped the baby weight! Not only that, but Mrs. Mike Comrie is doing it the healthy way!

"I am working out and I'm trying and I'm trying not to [obsess]. Everyone wants their body back, but all in time. It took nine months to get there and so hopefully, it won't take that long to get off, but I'm doing it slowly," she revealed in a recent interview with Access Hollywood.

Whatever you are doing is working, Duffster!