PIC: See Julia Roberts' Amazing Bikini Body at 44!

Pretty Woman!

Oscar-winning actress Julia Roberts flaunted her stunning bikini bod on Thursday while vacationing with her family.

Roberts, 44, wore green halter top two-piece swimsuit while hanging out poolside at her Hawaii hotel. The flattering bikini showed off the star's flat tummy and long, lean legs.

But the Mirror, Mirror actress wasn't just lounging around working on her tan. The hands-on mom showed off her famous grin while playing her kids -- twins Hazel and Phinnaeus, 7, and Henry, 5 -- in the pool. Hawaii seems to be a favorite vacation spot for Roberts and her husband Danny Moder, 43, as they frequently vacation there.

Later that weekend, Roberts opted to wear a cover-up to hit the beach with her children. In an interview with Vanity Fair in February, the actress revealed her children have no idea she's fa mous. 

"I was on a a crowded street, and somebody noticed me, and then another person noticed. Somebody said as we were walking past, 'Oh, that's Julia Roberts.' We all just kind of kept going, and then Finn said, 'Yeah, my mom's Julia Robinson,'" Roberts recalled. "That's what gives you perspective. It could be Robinson, it could be Johnson, because it has nothing to do with me as a person."