The most outrageous Billboard Music Awards looks of all time

You only live once, right?!

The Billboard Music Awards -- next to MTV's Video Music Awards -- has built quite a reputation for having some pretty YOLO-worthy looks. The music industry's biggest stars have hit the red carpet for the annual show in some jaw-dropping looks through the years.

Celine Dion's 2003 ensemble is the songstress's most risqué look to date -- she nearly flashed her lady parts in the nude-colored gown with revealing cutouts.

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Of course, we definitely didn't miss Usher and Nick Cannon on the red carpet with their incredibly bright yellow outfits. And then in 2004, Diana Ross stunned the crowd with her massive ensemble that literally transformed into three separate looks.

And then there's Gwen Stefani -- the 47-year-old singer rocked a pretty horrific denim dress back in 2003. That's definitely one look she wants to forget about!

The 2017 Billboard Music Awards will take place this Sunday (May 21), and we're definitely expecting more shocking looks to add to this list! Check out the wildest looks from years past in the slideshow above.

RELATED: J.Lo sizzles on the Billboard Latin Music Awards red carpet:

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