Justin Bieber, Ariana Grande and Fith Harmony light up Jingle Ball

Fuzzy mittens and a crop top? Yes, that is the perfect outfit in this teen winter wonderland. 
Jingle Ball, the annual tour that teams up with radio stations across the country to bring together some of pop's biggest names, stopped by Madison Square Garden over the weekend to party with Z100. 
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Acts making a splash this year like Daya and the Danish band Lukas Graham joined the likes of Ariana Gra