The Billboard Music Awards, the event where Miguel nearly decapitated a poor woman with a crazy leg-drop (on accident, though), Rihanna and Britney Spears had a pillow fight onstage, Nicki Minaj gave Lil' Wayne a lap dance, and so much more. It's also where some of the wildest outfits have graced the red carpet and the stage, as is wont to happen at award shows. 

From Busta Rhymes to Justin Bieber, these celebs have given us memories and hilarity we'll cherish forever. Seriously, some of these are so terrible, it's amazing. Check out The Most Outrageous Outfits in Billboard Music Awards History, and keep an eye out for more during this Sunday's show. 

RELATED: The Most Swagless People Who Are (Otherwise) Winning in Life
RELATED: The Craziest Oscars Outfits of All Time