There are a lot of super cool holidays out there, but today has to be one of our favorites. If you didn't know already, it's National Girlfriends Day, so natch, we're celebrating some of our favorite celebrity friendships!
Tons of your fave besties aren't just besties by chance — they actually work together! From Rowan Blanchard and Sabrina Carpenter to Raini Rodriguez and Laura Marano, M rounded up 20 celebs who went from being co-stars to being best friends forever!
Click through to see them all, then tell us in the comments: What is your best friend like? Which pair of celeb BFFs do you look up to the most?