Britney Spears Shows Off Rock Hard Abs in Bikini Selfie

Britney Spears is showing off her rock hard abs while on her vacation in Hawaii!

The 35-year-old entertainer was photographed in her bikini with her two sons Jayden James and Sean Preston and her mom Lynne. You can see all of the photos below!

PHOTOS: Check out the latest pics of Britney Spears

“Another great day,” Britney captioned the photos on Instagram. How amazing does Britney look!?

If you missed it, Britney announced the final dates of her Las Vegas residency.

See the photos of Britney Spears’ vacation…