Britney's Most Epic Billboard Music Awards Outfits

There are certain pop stars and award shows that seemingly go hand-in-hand. Like Madonna to the MTV Video Music Awards or Adele to the Grammys, there's something about Britney Spears at the Billboard Music Awards that turns the annual event into a must-see extravaganza. It's no surprise that Spears is receiving the 2016 Billboard Millennium Award this year and also opening the star-studded show with a medley of her hits.

The princess of pop has made such a lasting impression at this awards show ever since her very first Billboard Music Awards appearance in 1998. Back then, Usher and the soundtrack to Titanic were the big winners, while Spears wasn't even nominated. However, she worked the red carpet like a pop star-in-training in a lavender gown paired with a white shawl. Spears' look has evolved since then and over the years, has shown up either on the red carpet or on stage at the Billboard Music Awards in truly unforgettable ensembles.

One of her most memorable Billboard Music Awards performances was in 2011, when Spears slayed the "S&M" remix alongside fellow pop star Rihanna. The duo wore black-and-white dominatrix gear, but Spears added a latex mask and rabbit ears to add a layer of fierceness to her S&M look.

Bunny mask aside, Spears has given us life with her other Billboard Music Awards ensembles.

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Good Girl Gone Bad

After taking her dominatrix mas off, Spears proceeded to have an epic pillow fight with Rihanna, which was also insane — in the best way possible.

Jailhouse Rock

In 2011, the same year when Brit and Rihanna stole the Billboard Music Awards with "S&M," the singer returned for a second performance. This time, Spears played dress up in a maybe sexy policeman costume to sing "Till The World Ends" with Nicki Minaj.

Black Widow

Last year, Spears performed "Pretty Girls" with rapper Iggy Azalea. The look was classic Britney: sheer, shiny, and skin-baring.

Puppy Love

She went sheer back in 2004 in a chic mini-dress, but also brought her pet dog and ex-husband Kevin Federline as her red carpet dates.

Pretty In Pink

Spears was a full-blown pop star in 2000 and she definitely dressed the part in this fuchsia and pink showstopper.