Jennifer Aniston's Bikini is White Hot

Jennifer Aniston soaks up the sun at a swimming pool by a Florida hotel lounge on Saturday.

Aniston, 39, was taking a break from filming her new movie, Marley & Me.

And don’t forget–Jen will be the “surprise” guest star on tonight’s season finale of Oprah‘s Big Give, airing Sunday @ 8PM ET/PT on ABC.

“I wouldn’t miss it … This is such an amazing, fantastic thing, to see all of these people compete to outgive each other,” Aniston says in the finale.

15+ pictures inside of Jennifer Aniston‘s white hot bikini…