This may be the skinniest we've ever seen Britney Spears!
The mother-of-two posted a new swimsuit pic to Instagram on Tuesday, and fans immediately began commenting on how thin the singer looks.
"Bought three new swimsuits today 👙 This one is my favorite!" the 34-year-old captioned a photo of her in a neon green one-piece with cut-outs on the side.
Brit has been posting more and more snaps of her perfectly toned bod, previously sharing her fitness secrets with Women's Health.
"I don't mind working out," she told the mag. "I'm at my best when I'm busy. If I don’t work out [in a gym], I’m either swimming laps or I’m doing yoga."
The blonde beauty also relies heavily on an activity she's been doing for two decades. "Dancing is a great cardio workout. Tough and fun at the same time," she shared.
Scroll through the gallery for a look at how Brit's bikini bod has changed over the years: