Katy Perry's Sparkling! A Firework In Blumarine!

Katy Perry came back from the dark side, if only for a couple of hours, at the Billboard Music Awards on Sunday.
Still rocking her dark purple tresses and on-trend dark berry lip, the Wide Awake songstress lightened up in a shimmering Blumarine lilac gown.
Very glamorous and pretty!
Thoughts???
[Image via Getty Images.]