
After signing with Capitol Music Group in 2007, her fourth record label in seven years, she adopted the stage name Katy Perry and released her first Internet single "Ur So Gay" that November, which garnered public attention but failed to chart. She rose to fame with the release of her second single "I Kissed a Girl" in 2008, which went on to top international charts. Perry's first mainstream studio album One of the Boys followed later that year and subsequently became the 33rd-best selling album worldwide of 2008. It was accredited platinum certification by the Recording Industry Association of America, while "I Kissed a Girl" and her second single "Hot n Cold" both received multi-platinum certifications. The recording earned two Grammy Awards nominations. In 2009, Billboard magazine named her the 51st-best-selling music artist of the 2000–2009 decade.
Perry is the first female artist to get five hits on the Billboard Hot 100 in one year. Her second studio album Teenage Dream was released in August 2010 and debuted at number one on the Billboard 200. The album included the Billboard chart-toppers "California Gurls", "Teenage Dream", "Firework", "E.T." and "Last Friday Night (T.G.I.F.)", and top five hit "The One That Got Away". The album produced five Hot 100 toppers, and was only the second album—after Michael Jackson's Bad—to do so and the album produced six Hot 100 top ten hits. It was the seventh album to reach this mark. With "E.T." at number one on the chart of May 12, 2011, Perry became the first artist in history to spend 52 consecutive weeks in the top 10 of the Billboard Hot 100. She spent a total of 69 consecutive weeks in the Top 10. The recording earned six Grammy Award nominations, including the coveted Album of the Year and Record of the Year. In December 15, 2011, she was elected the Artist of the Year by MTV.
Perry became a guest judge on the seventh series of British television show The X Factor and the ninth season of American Idol. She has released fragrances "Purr" and "Meow". She voiced Smurfette in the 2011 film The Smurfs. Perry had a long relationship with Travie McCoy. She later married Russell Brand in October 2010, and separated from him in December 2011.