Britney Spears is feeling herself.
The 35-year-old singer struck a pose in nothing but a black bra, undies, and high heels, and shared the sexy snap with fans on Instagram on Thursday. Spears gave credit to photographer Denise Truscello for the shot.
Of course, the mother of two makes it no secret that she works hard for her super-fit body. Earlier this week, she Instagrammed video of herself working out to Fergie's "Fergalicious."