Katy Perry picture

Description: Her debut single, "UR So Gay," generated some online buzz with its mischievous lyrics and accompanying music video. However, "I Kissed a Girl" proved to be her true breakthrough single, topping the charts in 20 countries and pushing its accompanying album, 2008's One of the Boys, into the Top Ten in America. Perry supported her debut by joining... ( +expand to view full text )

Description: Her debut single, "UR So Gay," generated some online buzz with its mischievous lyrics and accompanying music video. However, "I Kissed a Girl" proved to be her true breakthrough single, topping the charts in 20 countries and pushing its accompanying album, 2008's One of the Boys, into the Top Ten in America. Perry supported her debut by joining the Warped Tour that summer and appearing in an episode of The Young and the Restless.