Today's a major milestone for Katherine McNamara: the Shadowhunters actress is celebrating her 21st birthday! To commemorate this big occasion, we're taking a look back at how the style star's personal fashion sense has evolved during all of her years attending some of the hottest and most glamorous events around.
Kat attended her first big red carpet celebration back in 2010, and her style was way different then compared to the looks you're used to seeing her rock now. She was all about cute and colorful outfits – and now she's the queen of fierce ensembles that pack a sassy punch!
Click through the gallery to watch Kat's total style evolution right in front of your eyes! Then, make sure to wish her the happiest of birthdays by leaving a comment below.