Details: This poster shows Katy Perry with blue hair. At the top it says 'Katy Perry' and at the bottom it says 'California Gurls'.
Katheryn Elizabeth Hudson (born October 25, 1984), better known by her stage name Katy Perry, is an American singer-songwriter and musician. Her albums include Katy Hudson and One of the Boys. Popular songs include Ur So Gay, I Kissed a Girl, Hot N Cold, Thinking of You, Waking Up in Vegas, California Gurls.