WOW! Britney Spears could be in the best shape of her life! She looks freakishly amazing, even without a freakish amount of Photoshop!

She's been gearing up for the next leg of her Piece of Me residency in Las Vegas, and it looks like the hard work is paying off.

Brit Brit shared the photo and beamed:

Amazing amazing shoot with @jefflipsky today! Been working hard this summer! So ready to bring it for the next round of #PieceOfMe shows next week

You want a hot body? You better work, b**ch!