Was Britney Spears' Billboard Awards' opening iconic or robotic?

Britney Spears kicked off the Billboard Music Awards by walking the red carpet in her underwear — er, a sheer semblance of a dress.

Then, for the show's opening number, she performed a medley of her greatest hits.

Wearing a short red number, which quickly became much, much shorter.

And while Britney's sheer number of iconic songs is undeniable, the performance's quality is...debatable.