Taylor Swift gets a lot of flack for her whirlwind romances, but when it comes to friendships, she's as true-blue as they come. That said, she's not exactly a one-girl kind of gal. Case in point: Last week, she was celebrating her 24th birthday in Australia with new gal pal Lorde. This week? Making Christmas cookies with Hailee Steinfeld. What can we say? She's popular.
Naturally, a celebrity-studded social circle this big (she recently admitted to Ryan Seacrest that she's got "15 best friends") requires a flowchart to keep everything — and everyone — straight. Behold, our guide to Taylor Swift's top celeb BFFs, from Selena to Ed to Emma. Here's to hoping we make the cut next year.