With her big day upon us, what better way to celebrate than by looking through the star's best looks? Let's examine.
In what is arguably her most sophisticated look to date, Gomez nailed it in a custom Diane von Furstenberg gown at the MET Gala back in May. The only thing better than the merlot creation? Those dazzling Lorraine Schwartz diamond earrings.
Sticking with her staple red hues, Gomez selected a feisty beaded Dolce & Gabbana mini at the 2013 ESPY Awards. Now rewind to 2011 Vanity Fair Oscar party when Gomez (wearing red and Dolce & Gabbana again) sizzled in a plunging crimson dress. Sure, we remember the gorgeous gown. But what we really remember about the night is that it was Gomez's first red carpet appearance with then-boyfriend Justin Beiber. Awww.
But back to the fashion. Do you recall Gomez's retro Dolce & Gabbana silver beaded gown, complete with a faux bob? We're guessing yes. And we're certain that no one could forget her slinky golden Giorgio Armani gown.
Which one of the birthday girl's looks is your favorite? Sound off in the comments below!