Katy Perry's Voice Heard Britney Spears' "Smurfs 2" Track

Katy Perry's Voice Heard Britney Spears'

Two pop princesses recently had a near-duet on the soundtrack of “The Smurfs 2″ as Katy Perry revealed she also provided vocals in addition to Britney Spears” prominent voice.

Written by Bonnie McKee, “Ooh La La” features the “Toxic” singer supporting the flick about everyone”s favorite little blue creatures.

However, in an interview with E! News, Katy Perry divulged, “Me and Bonnie secretly did some background vocals on that song. So maybe listen for our voices.”

Providing the voice of Smurfette in the film, Katy had never actually met the 31-year-old songstress until the premiere, where she gushed, “I can”t wait to meet her!”

Also enjoying the encounter, Britney later tweeted, “So great to see you Smurfette @katyperry! Can”t wait for our Vegas date …”