Katy Perry, original name Katheryn Elizabeth Hudson, (born October 25, 1984, Santa Barbara, California, U.S.), American pop singer who gained fame for a string of anthemic and often sexually suggestive hit songs, as well as for a playfully cartoonish sense of style.

Katy Hudson was raised in southern California. As a teenager, she learned to play the guitar and sought a musical career in Nashville with a Christian record label, but her debut album, the gospel-influenced Katy Hudson (2001), sold poorly. By then, however, Hudson had found new musical models in such rock artists as Freddie Mercury and Alanis Morissette, whom she had discovered through friends. She soon moved to Los Angeles to pursue success in the secular music realm, adopting her mother’s maiden name, Perry, to avoid confusion with the actress Kate Hudson.

In 2007, Capitol Records put out Perry’s EP Ur So Gay, and several months later  the single “I Kissed a Girl”. The combination of titillation and polished melodicism helped “I Kissed a Girl” become a number one hit in multiple countries, powering sales for her album One of the Boys (2008). With its bouncy, sharp-tongued second single, “Hot N Cold,” also proving popular, the album—much of which Perry wrote herself—eventually registered sales of more than one million copies in the United States.

By late 2009 Perry had become frequent tabloid fodder, largely because of her quirky, vividly colored fashions—which borrowed variously from 1940s pinup models, burlesque performers, and the kawaii (“cute”) cultural aesthetic of Japan—as well as her high-profile relationship with English comedian Russell Brand, to whom she was briefly married (2010–12). After recording the stripped-down live album MTV Unplugged (2009), Perry returned to the studio. The resulting release, Teenage Dream (2010), which provided a broader showcase for her full-throated voice, was even more commercially successful than One of the Boys, spawning such hits as the warm-weather frivolity “California Gurls” (featuring rapper Snoop Dogg) and the inspirational “Firework.” When “Last Friday Night (T.G.I.F.)” reached the top of the Billboard Hot 100 chart in mid-2011, Perry tied Michael Jackson’s record of five number one songs from a single album. She maintained her grip on the mainstream with her next release, Prism (2013), which produced, among other hits, the anthemic “Roar.” Her 2016 single “Rise” was featured in television coverage of that year’s Olympic Games in Rio de Janeiro. Perry’s fourth studio album, Witness (2017), more introspective than her earlier work, was less well received.

Perry won several Grammy Award nominations, including album of the year for Teenage Dream. In 2011 she made her big-screen acting debut, providing the voice of Smurfette in the film The Smurfs, and she reprised the role for a 2013 sequel. She was also the subject of the 3-D concert-tour documentary Katy Perry: Part of Me (2012). In 2018 Perry became one of the judges on the new incarnation of the singing competition TV show American Idol.