Reese Witherspoon burn 60 blonde sunglasses brentwood

She's keeping off those holiday pounds!

Reese Witherspoon hit the gym this morning in Brentwood, and the actress must have had a good workout, because she was sweaty and all smiles as she sipped a green juice on the way out.

It's still had to believe she's a mother-of-three with this body!

The Oscar winner recently gushed to Elle about how being a parent has made her a better person, and it caused us to wonder if she's ever shared those sentiments with her childless besties Chelsea Handler and Jen Aniston?

"Somebody was saying to me the other day, 'Oh, people get less interesting when they have kids.' I just don't think that's true. I feel like I was so confused before I had kids, I almost got in my own way. Having kids made me clearer about who I was as a woman. I just wanted to exhibit good qualities for my daughter," she explained to the mag.

Reese is a great role model!