At the end of the '90s, Christina Aguilera (41) had her breakthrough with the hit song "Genie in a Bottle". At that time she was still a sweet pop princess, but since then, the "Dirrty" singer's image has changed.

Today, 20 years after her breakthrough, Xtina is hotter than ever. She proved this once again with her most recent birthday photo on Instagram. 

Christina Aguilera poses topless

For her 41st birthday on December 18, Christina Aguilera gave her fans a very special present on Instagram. In a new series of photos, the singer shows herself as sexy as ever and almost completely naked. 

Xtina poses topless in the photos with only her long hair covering the bare essentials. Just recently Christina posted some pictures in a hot vamp look as a redhead. In the meantime, she has returned to her blond mane for these new photos.

However, the 41-year-old does not completely do without any fabric... She wears black leather gloves with lace, making the photos even more seductive.

With eye-catching make-up and very seductive poses, she looks into the camera and is sure to drive many fans crazy.

Christina Aguilera's fans are over the moon with the sexy post. Countless compliments and birthday wishes accumulate in the comments. Happy birthday, Christina!