By Breaking Celebrity News Staff

Hilary Duff is enjoying every minute of being a first time mom since giving birth in March.

The former Disney star proudly showed off her adorable son, Luca, on a family vacation in Mexico recently, along with her post baby bikini body, and Breaking Celebrity News has the photos.

Duff looked happy and healthy as she frolicked in the sun in a black two piece with her baby, mom and sister Haylie.

The new mother has said that she isn't too concerned about the weight she gained during her pregnancy -- in fact, she says she had fun packing on the pounds!

Hilary sat down and talked to Bethenny Frankel recently about her extra cush.

"My whole life I’ve worked out and exercised and been in the public eye and always kind of watched what I ate. And this was like a free pass and it was a blast," she said.