It's Darren Criss' birthday today, and we can't believe that the actor is already 28 years old! He had his first mainstream breakout role on Glee, playing a Warbler named Blaine, and we've loved watching him sing and dance on screen ever since.

Though he's only been a Hollywood mainstay for a few years, he's made friends with pretty much everyone from Demi Lovato to Ariana Grande. Click through to see photos of him with his celebrity besties, and let us know which pic was your fave in the comments!