Scrutiny: Katy Perry, Britney Spears sing in one song

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World premiere of

World premiere of "The Smurfs 2"
Britney Spears and Katy Perry PNG by Nothatinoccent on deviantART

Britney Spears and Katy Perry PNG by Nothatinoccent on deviantART
Short Celebrities: Britney Spears height: 5ft 4.25in (163 cm) and Katy ...

Short Celebrities: Britney Spears height: 5ft 4.25in (163 cm) and Katy ...
Awkward Moments Between Katy Perry And Britney Spears At 'Smurfs 2 ...

Awkward Moments Between Katy Perry And Britney Spears At 'Smurfs 2 ...
britney-spears-and-katy-perry

britney-spears-and-katy-perry
Britney Spears | Us Weekly

Britney Spears | Us Weekly
Awkward Moments Between Katy Perry And Britney Spears At 'Smurfs 2 ...

Awkward Moments Between Katy Perry And Britney Spears At 'Smurfs 2 ...
Britney Spears And Katy Perry Are (Now Literally) Works Of Art

Britney Spears And Katy Perry Are (Now Literally) Works Of Art
PHOTOS Britney Spears and sons Sean Preston and Jayden James at Smurfs ...

PHOTOS Britney Spears and sons Sean Preston and Jayden James at Smurfs ...
Katy Perry & Mia Moretti from Prada's Great Gatsby Party | E! News

Katy Perry & Mia Moretti from Prada's Great Gatsby Party | E! News
Demi - Teen Choice Awards - August 07, 2011 - Demi Lovato Photo ...

Demi - Teen Choice Awards - August 07, 2011 - Demi Lovato Photo ...
Katy Perry & Carly Rae Jepsen: Billboard Women in Music Luncheon 2012 ...

Katy Perry & Carly Rae Jepsen: Billboard Women in Music Luncheon 2012 ...
Taylor Swift & Katy Perry: Dinner Date!: Photo 2154302 | Katy Perry ...

Taylor Swift & Katy Perry: Dinner Date!: Photo 2154302 | Katy Perry ...
Awkward Moments Between Katy Perry And Britney Spears At 'Smurfs 2 ...

Awkward Moments Between Katy Perry And Britney Spears At 'Smurfs 2 ...
Katy Perry and Dita Von Teese | Formal dresses long, Fashion, Dita von ...

Katy Perry and Dita Von Teese | Formal dresses long, Fashion, Dita von ...
Carey and Isla Have a Roaring Gatsby Bash With Katy | Katy perry, Katy ...

Carey and Isla Have a Roaring Gatsby Bash With Katy | Katy perry, Katy ...
KATY PERI (106) | YOUNESS2010 | Flickr

KATY PERI (106) | YOUNESS2010 | Flickr
Dlisted | britkatyperrysmurfs4

Dlisted | britkatyperrysmurfs4
Little Mix: In-Tune Concert at Hard Rock Cafe | Photo 546892 - Photo ...

Little Mix: In-Tune Concert at Hard Rock Cafe | Photo 546892 - Photo ...
Demi Lovato is People Choice Pretty | Photo 354162 - Photo Gallery ...

Demi Lovato is People Choice Pretty | Photo 354162 - Photo Gallery ...
Dita Von Teese is a Bungalow Babe: Photo 1198361 | Dita Von Teese ...

Dita Von Teese is a Bungalow Babe: Photo 1198361 | Dita Von Teese ...
Anna Kendrick claims Katy Perry touched her breasts at Grammys - India ...

Anna Kendrick claims Katy Perry touched her breasts at Grammys - India ...
Demi Lovato is People Choice Pretty | Photo 354160 - Photo Gallery ...

Demi Lovato is People Choice Pretty | Photo 354160 - Photo Gallery ...
Total Sorority Move | Daily Sorority Spotlight: Delta Phi Epsilon

Total Sorority Move | Daily Sorority Spotlight: Delta Phi Epsilon
Katy Perry - 2012 Billboard Women In Music Luncheon at Capitale ...

Katy Perry - 2012 Billboard Women In Music Luncheon at Capitale ...
Teenage Dream, Katy Perry, Crochet Top, Sleeveless Dress, Celebrities ...

Teenage Dream, Katy Perry, Crochet Top, Sleeveless Dress, Celebrities ...
K$ & KP - Ke$ha V.S. Katy Perry Photo (24678550) - Fanpop

K$ & KP - Ke$ha V.S. Katy Perry Photo (24678550) - Fanpop
Katy Perry photo 1008 of 3000 pics, wallpaper - photo #401100 - ThePlace2

Katy Perry photo 1008 of 3000 pics, wallpaper - photo #401100 - ThePlace2
MTV Video Music Awards: Behind The Scenes - Haute Living

MTV Video Music Awards: Behind The Scenes - Haute Living
Celeb Look-Alikes! | Celebs, Celebrity look, Zooey deschanel

Celeb Look-Alikes! | Celebs, Celebrity look, Zooey deschanel
Katy Perry and Miley Cyrus attend the 55th Annual GRAMMY Awards ...

Katy Perry and Miley Cyrus attend the 55th Annual GRAMMY Awards ...
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