Today is Shawn Mendes' birthday! This up-and-comer is everywhere online (his fans even got his birthday trending on Twitter) and IRL (he's been touring with Austin Mahone, The Vamps, Fifth Harmony, and Alex Angelo), so we're thrilled to wish him a sweet sixteen.
Because Shawn is such a sweetheart, we thought we'd capture his most adorable moments with his famous friends — some you'd expect, and others you wouldn't. Click through to see Shawn's celeb besties, and let us know which pic you think is the cutest!
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