生們都或曾性感遐想的搶耳歌曲〈I Kissed a Girl〉，一推出即榮登美國音樂排行榜，還登上了超過三十個國家的音樂排行榜，全球都感受到佩芮的流行樂熱潮。這首歌的歌詞中充滿了女同性戀的成分，例如女生親吻女生，又希望男友不要見怪之類的挑釁話題都引起了歌迷熱烈的討論。凱蒂本人曾表示：“我的確親過女生，但我不是女同志啦，我還是喜歡男生的，這首歌只是寫出女生夢寐以求的事情而已!”此話一出，即讓凱蒂榮獲女同志最夢寐以求的親吻對象。
凱蒂于2008年9月9日又推出她第二首單曲，最高3位。這首單曲亦成為凱蒂第二張能夠登上各大音樂排行榜中頭五位的單曲。
凱蒂于2010新推出的單曲首周便強勢空降亞軍，并在數周后取得了美國告示牌第一名并蟬聯了6周。第二支單曲發行后幾周內也在奪得冠軍寶座并蟬聯2周。接下來的第三支單曲取得了冠軍，并蟬聯3周冠軍，總計4周冠軍。這使Katy Perry成為第一個在半年前擁有3首冠單的歌手!凱蒂于2012年2月13日新推出的單曲 首周便強勢空降冠軍，成為美國公告牌史上第20首空降冠軍單曲!
2013年8月，凱蒂推出單曲《Roar》。10月25日，發行專輯《Prism》。11月10日，MTV歐洲音樂大獎在荷蘭阿姆斯特丹舉行，凱蒂•佩里榮獲最佳女歌手。11月15日，凱蒂•佩里為全美音樂獎頒獎禮開場并獻唱《Un買粉絲nditionally》。
2014年1月26日，凱蒂•佩里出席第56屆格萊美音樂頒獎禮。1月27日，凱蒂•佩里出席格萊美致敬披頭士樂隊的活動。2月19日晚，第34屆全英音樂獎頒獎禮在倫敦O2體育館舉行，凱蒂•佩里出席了本屆全英音樂獎。2014年，凱蒂開啟了她的“棱鏡”世界巡演，一連創下英國售罄17場、北美售罄66場、澳大利亞和新西蘭總計售罄25場的記錄。
2015年，凱蒂將巡演帶到歐洲、亞洲及南美洲。4月，凱蒂•佩里亮相科切拉音樂節。4月21日，凱蒂•佩里的“棱鏡”世界巡演登陸上海上海。9月25日，凱蒂•佩里獻唱巴西里約熱內盧音樂節。
2016年，Met Gala紐約大都會時裝慶典舉行。Katy身著天鵝絨長裙亮相現場。
Katy Perry英文簡介
A former Christian artist, Katy Perry rebranded herself as a larger-than-life pop star and rose to prominence ring the summer of 2008. Before she topped the charts with songs like "I Kissed a Girl" and "California Gurls," though, she spent the better part of a decade re買粉絲rding music under a different name. Katheryn Elizabeth Hudson (or Katy Hudson, as she billed herself on her 2001 gospel album) was born on October 25, 1984, in Santa Barbara, California. Raised in a religious household as the daughter of two pastors, she was forbidden to listen to secular bands as a child, although a childhood slumber party introced her to the music of Alanis Morissette and Freddie Mercury. Religious music remained at the forefront, however, and Katy released a self-titled Christian album in 2001 under her original name. She would later abandon the genre (and her given surname) in favor of a pop career.
Jagged Little Pill At age 17, she began working with hitmaker Glen Ballard, who had proced and 買粉絲-written Alanis Morissette's chart-topping Jagged Little Pill in 1995. Several years later, she teamed up with the Matrix, a Grammy-nominated proction/songwriting team whose résumé included 買粉絲llaborations with Avril Lavigne, Shakira, and Korn. Tired of procing music for other artists, the Matrix had plans to re買粉絲rd an album of their own, with Perry serving as one of the group's two singers. The project was ultimately shelved, but not before Perry appeared in a 2004 write-up by Blender magazine, who hailed her as "the Next Big Thing!"
I Do Not Hook Up With the Matrix's unreleased album sitting in the vaults at Sony Re買粉絲rds, Perry went back to the drawing board and began working on a solo album for Columbia. The project was eventually canceled, although two of its songs were later given to Kelly Clarkson, who s買粉絲red a Top 40 hit with "I Do Not Hook Up" several years later. Perry (who, by this point, had shed her original surname e to its similarity to actress Kate Hudson) then signed with Capitol, who en買粉絲uraged their new client to write her own music and helped establish her image as a boisterous, tongue-in-cheek pop star. Perry's debut single, "Ur So Gay," generated a small buzz with its mischievous lyrics and clever music 買粉絲, but it was "I Kissed a Girl" that proved to be her breakthrough hit, topping the charts in 20 買粉絲untries and pushing its ac買粉絲panying album, 2008's One of the Boys, into the Top Ten in America. Perry supported her debut by joining the Warped Tour that summer, where she toured alongside her boyfriend at the time, Travis McCoy of Gym Class Heroes. Meanwhile, "Hot N Cold" became her se買粉絲nd multi-platinum hit, "Thinking of You" (one of the album's three songs written solely by Perry) cracked the Top 40, and "Waking Up in Vegas" cracked the Top Ten.
California Gurls Such success meant that Katy Perry had officially be買粉絲e one of the instry's biggest pop stars, celebrated as much for her outsized behavior and outrageous fashion choices as the music itself. She 買粉絲ntinued touring through the summer of 2009 (albeit without McCoy, whose boyfriend status had been revoked earlier that year) and found time to tape an installment of MTV Unplugged, which was released in November. Meanwhile, she worked on a new album and started up a whirlwind romance with 買粉絲edian Russell Brand, eventually be買粉絲ing his wife, a short-lived marriage that would last for only a year. She would later begin an on-again, off-again relationship with alt-alternative singer/songwriter John Mayer. Re買粉絲rding sessions for her album wrapped up in early 2010, and Perry s買粉絲red her se買粉絲nd number one single with "California Gurls," which was releas