Today is Taylor Swift's 24th birthday! We can't believe how fast she's growing up — it seems like just yesterday she released her song "22" and was raving about the best year of her life.

Throughout Taylor's career, she's made a ton of famous friends. While she's lost touch with a few, she's still really close to most of them. Click through to see 24 of her closest famous friends ever, then let us know who you miss seeing Taylor with in the comments below. Don't forget to leave your birthday wishes, too!