July 28, 2014
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Katy Perry and Britney Spears at Smurfs 2 Premiere 1:02 minutes | 2013-Jul-29
by ITN
Katy Perry Sang Backup on Britney Spears "Ooh La La" Song 2:33 minutes | 2013-Jul-30
by Clevver Music
"The Smurfs 2" Stars Hit the Red Carpet 1:44 minutes | 2013-Jul-30
by E!
Katy Perry in a Smurf Dress 1:05 minutes | 2011-Oct-27
by celebritywire
Britney Spears and Katy Perry's Secret Collaboration Revealed 1:11 minutes | 2013-Jul-29
by Wochit Entertainment
Katy Perry on The Smurfs 1:47 minutes | 2011-Oct-30
by celebritywire
The Smurfs Movie Premiere in NYC 1:23 minutes | 2011-Jul-27
by LifeMinute.tv
Katy Perry Wants to Be In BeetlejuiceĀ 2 1:51 minutes | 2013-Oct-26
ET to GO: Stars Preview All-New 'Smurfs 2' 1:35 minutes | 2013-Jul-16
by ETonline.com