Happy early birthday to Selena Gomez! It’s hard to believe that the Disney darling –and Ryan Seacrest Foundation ambassador– is going to 20-years-old exactly one month from today! For this fashion evolution we poured over two decades of style to find her 20 best looks. From Barney to bombshell, Selena has certainly grown up a lot over the years.

Justin Bieber and Selena Gomez Look Dashing Together at Wedding [PHOTO]

On her style icon, Selena recently told People Magazine, “Someone I love when it comes to fashion is Gwyneth Paltrow. I think she’s so classy and sophisticated, but still very fierce in a way.” And on her own style Selena spoke to Elle Magazine back in June saying, “My personal style is classic, especially in the summer.” Check out more of her classic looks below.