Katy Perry: Part Of Me 3D - European Premiere

Katy Perry attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England. (Getty Images)

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.

Katy Perry: Part Of Me 3D - European Premiere

attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England.