Britney Spears shows off her Abs in a photo posted on her website, taken during a tour rehearsal on Monday.

The photo was taken as Spears prepares for her upcoming world tour, The Circus. She shows off her body after losing 20 pounds, thanks to two-hour cardio-and-strength-training workouts three times a week.

Her new tour, The Circus, is to kick off Mach 3 in New Orleans.