AxEaO18CMAASWz2460.jpg She's back to her "Slave For U" days!

Britney Spears is currently enjoying a Hawaiian vacation with her fiance Jason Trawick and sons Sean Preston and Jayden James, and the X-Factor judge showed off her fab physique in a Twitpic she posted today with the caption, "Getting ready for some pool time! Having a blast xxoo."

The 30-year-old looks tanned and toned in the shot, embracing little Jayden while Sean laughs in the foreground. Our beloved Brit Brit is the picture of health and happiness, and we couldn't be more thrilled for her!

She should give some diet and exercise tips to fellow former Mouseketeer Christina Aguilera!