Katy Perry is set to challenge Justin Bieber at the cosmetic counter - the pop star has announced plans for a new nail polish line. The colorful "California Gurls" singer, who is famous for her ever-changing nail art, has teamed up with OPI, the same company behind Bieber's One Less Lonely Girl product.
The "Baby" singer's range of varnishes will be available through U.S. stores in time for the Christmas holidays. The Katy
Perry turned heads at the MTV Video Music