That is one toned booty, Lea Michele. The star took to Instagram yesterday to share a series of photos from her relaxing day at the spa, including a snap that showed off her very fit backside. In the picture, the former Glee actress is wearing a black one-piece swimsuit that features a low-cut back and halter neck. She posted the image without a caption.

Michele also shared a 'gram of herself lounging in the pool and one that showed her enjoying some down time, which she captioned: "A little zen time.." Zen, indeed. Check the photos out below.