Christina Aguilera celebrates her 41st birthday with a topless shoot

Christina Aguilera turned 41 on Dec. 18, and to mark the occasion, the pop star shared a racy shoot on Instagram.

"XTINA XLI," the singer wrote, using Roman numerals — and her famous nickname — to note her new age. A series of photos posted Saturday show her rocking long platinum blond hair extensions and wearing nothing but black sunglasses and black leather opera-length gloves featuring corset-style lacing.

Fans were quick to offer their birthday greetings — and praise the "smoking hot" shoot.

"Dayum mami," one commenter told Aguilera, who shares 13-year-old son Max with ex-husband Jordan Bratman and 7-year-old daughter Summer Rain with fiancé Matthew Rutler.

"So so so freaking gorgeous," read another commenter.

Aguilera — who also posed topless in September to help drum up interest in her upcoming concert — recently recreated one of her most daring looks for the People's Choice Awards earlier this month. In a nod to the string bikini and leather chaps she wore in her scandalous-for-the-time 2002 "Dirrty" video, the star wore a slightly more covered-up version of the look when she performed a medley of her hits at the award show.

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