Katy Perry will be 'Wide Awake' at the 2012 Billboard Music Awards this Sunday, May 20.

According to a press release, the singer, now sporting purple-tinted locks, will debut the song, which appears on the deluxe edition of her mega smash 'Teenage Dream: The Complete Confection,' live at the event.

Perry will take the stage at the MGM Grand Garden Arena in Las Vegas and perform the song on the broadcast, which takes place from 8 to 11PM ET and airs on ABC.

The song was penned for Perry's upcoming 3D film 'Katy Perry: Part of Me' and is a poignant ode to learning from a relationship after parting ways. Art imitating life, since Perry is in the midst of her divorce from Russell Brand? Could be. Brand recently unfollowed his former missus on Twitter, which is a sure sign that this relationship is truly kaput, despite the reunion rumors that pop up in the tabloids here and there.

Will you be tuning in for the live debut of 'Wide Awake' on Sunday night, PopCrush readers and KatyCats? We will be, since we love the song and cannot wait to see what Perry wears and what color and length hair she sports. This is a big performance debut for her, so we think her look will change to match it!

Listen to Katy Perry, 'Wide Awake'