Faith Hill Poses in Bikini for 41st Birthday

"Wearing a bikini on a magazine cover is my 41st birthday present to myself," she says in the magazine, as excerpted by JustJared.

How does she stay in such stunning shape?

Three-times-a-week Pilates sessions.

"I could bend in ways I haven't been able to since I was a teenager," she says. "My husband [Tim McGraw] loves it!"

See photos of more hot moms in bikinis!

The country crooner says she has always been was "very athletic, playing basketball and softball and running track.

"But in my 20s and 30s, I'd go through phases with exercise, working out for four weeks before a big tour or video shoot and not doing much afterward. Then I had three kids and turned 40, so I decided to make a lifestyle change."

Hill and McGraw -- who have three girls, Gracie, 11; Maggie, 10; and Audrey, 6 -- recently celebrated their 12th wedding anniversary.

DISCLAIMER: This posting was submitted by a user of the site not from The Insider editorial staff. All users have acknowledged and agreed that the submission of their story and its contents is in compliance with our Terms of Use.