Britney Spears Shares Lingerie Pic, Shows Off Incredibly Toned Body -- See Her Sexy Look!

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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.

PICS: Sexiest Celeb Bikini Bodies

Spears is obviously feeling body confident these days. On Wednesday, the "Slumber Party" singer flaunted her washboard abs with a silly selfie.

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."

WATCH: Britney Spears Jokes That Jamie Lynn Is Part of Fifth Harmony -- See the Hilarious Pic!

And could Spears' rumored new boyfriend, Sam Asghari, be part of the reason she's looking so healthy and happy these days? The singer opened up for the first time about Asghari last week -- whom she met on the set of her music video for "Slumber Party" -- and said she called him five months after he gave her his number.

"I kept his number, and it was so weird -- it was, like, five months later, and I found his number in my bag," she revealed to CBS Radio's Fast in the Morning With Nathan Fast on AMP 103.7 in Dallas. "I was like, 'He is really cute. This guy is really cute.' So then I called him, and ever since then, he is just a really fun, funny person."

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