From the Biebs' stylish leather pants to T-Swift's (adorable) unicorn T-shirt during her "22" performance (seriously, where can we get one?), our favorite teen celebs came dressed to impress at the 2013 Billboard Music Awards last night -- both on and off the stage. The ceremony, which celebrates the highest chart-toppers in the industry, took place at the MGM Grand Garden Arena in Las Vegas.
Last night's looks were all about sequins, neon and glitter -- though we can't say we're surprised that Ed Sheeran wore a blue long-sleeved shirt on the Red Carpet (some things you can just count on, right, Ed?). We especially loved Ariana Grande's flirty strapless dress, while Austin Mahone kept it casual with a simple T-shirt and jacket combo.
Click through the photos in the slideshow below to see the best teen celeb fashion moments at the BBMAs. Let us know who you think had the best style in the comments, or tweet @HuffPostTeen!