Kate Beckinsale Blonde Hair

Kate Beckinsale goes from a brown hair to blonde. x17online.com / Flynet Pictures

Kate Beckinsale is one sexy star, who looks gorgeous with her signature long dark tresses. That's why seeing her transformed into a blonde was shocking at first, but we have to admit, she looks downright beautiful with lighter locks, too!

The 37-year-old was spotted with her new 'do as she left the Los Angeles airport on Friday with her daughter, Lily, and husband, Len Wiseman (whom she is reportedly now vacationing with in Mexico).

Worn long and wavy, Beckinsale's newly dyed mane showed off plenty of lowlights, giving her hair a more natural look with depth and dimension. And can we just say that we love the mirrored aviator glasses with it? Beckinsale is one celebrity who plays the Hollywood glam perfectly!

Don't get too used to her lighter locks though. The actress will reportedly need her dark vampire-warrior tresses back when she starts shooting "Underworld 4: New Dawn" in March.

In the meantime, be inspired to do something different with your 'do! After all, women try an average of 104 hairstyles during their lifetime!

And check out more celebs who have gone from brunette to blonde and vice versa.

Watch the video below for pro tips on how to create glamorous waves!