From Her Cheerleader Days to Her Red Carpet Looks, See Fergie's Best Beauty Moments

Fergie is ringing in a very special birthday today---the big 4-0! Although the Grammy winning artist is positively ageless, she has spent majority of her life performing on stage, acting on the small and big screens, and most recently added a few titles to her ever-growing resume. On top of adding the finishing touches on her highly anticipated album, the chic mom (she has an adorable son, Axl, with husband Josh Duhamel) is also in the midst of promoting her first-ever fragrance.

When it comes to awards season, Fergie is never one to disappoint on the red carpet, particularly when it comes to her beauty looks. "I remember watching Marilyn Monroe, and I would try to do the big red lips and black liquid eyeliner," the star tells InStyle of her first makeup moment. "My mom wouldn't let me out of the house. But I had fun in my room." Since then, Fergie has experimented with her look, opting for sleek hair and dramatic lashes, and transitioning to more bouncy waves and minimal makeup over time. In honor of her birthday, take a look at her changing looks through the years.

PHOTOS: Fergie's Best Beauty Moments