New haircuts seem to have emerged as must-haves for celebrities this season. After the Canadian teen sensation, Justin Bieber, broke thousands of Beliebers' hearts by losing his signature floppy hair, the FRIENDS star Jennifer Aniston sported a brand new hairdo on her 42th birthday.

The birthday girl flaunted her sexy new hairdo at the Madrid premiere of her new film Just Go With It on Tuesday.

The blond beauty, who set the trend in the '90s with her out-of-the-bed hairstyle in the popular sitcom FRIENDS, has gone shorter with her hair.

Start slideshow to see the photos of Aniston flaunting her new hairdo in Spain alongside cast members Adam Sandler and Brooklyn Decker: