Singer Katy Perry rose to fame in 2008 with the release of her second studio album One of the Boys, and ever since then, she has been in the spotlight. So far, Perry has released six successful studio albums, and over the years she also explored the world of voice acting in The Smurfs movies and served as a judge on American Idol.

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While the star released plenty of great songs, only nine of her singles ended up topping the Billboard Hot 100. Keep on scrolling to see which ones and just how many weeks they spent at spot number 1!

9 "Part of Me" Spent 1 Week On Top Of The Charts

Kicking the list off is Katy Perry's song "Part of Me" which is the lead single from Teenage Dream: The Complete Confection which was released in 2012. The song's debut on the Billboard Hot 100 was on March 3, 2012, and the song spent 22 weeks on the charts. "Part of Me" peaked at spot number 1 on March 3, 2012, and it spent one week there.

8 "Roar" Spent 2 Weeks On Top Of The Charts

Next on the list is Katy Perry's song "Roar" which is the lead single from her fourth studio album, Prism which was released in 2013. The song's debut on the Billboard Hot 100 was on August 24, 2013, and the song spent 35 weeks on the charts. "Roar" peaked at spot number 1 on September 14, 2013, and it spent two weeks there.

7 "Teenage Dream" Spent 2 Weeks On Top Of The Charts

Let's move on to Katy Perry's song "Teenage Dream" which is the second single from her third studio album of the same name released in 2010.

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The song's debut on the Billboard Hot 100 was on August 7, 2010, and the song spent 33 weeks on the charts. "Teenage Dream" peaked at spot number 1 on September 18, 2010, and it spent two weeks there.

6 "Last Friday Night (T.G.I.F.)" Spent 2 Weeks On Top Of The Charts

The song "Last Friday Night (T.G.I.F.)", which was the fifth single from Katy Perry's third studio album, Teenage Dream is next. The song's debut on the Billboard Hot 100 was on September 11, 2010, and the song spent 24 weeks on the charts. "Last Friday Night (T.G.I.F.)" peaked at spot number 1 on August 27, 2011, and it spent two weeks there.

5 "Dark Horse" Spent 4 Weeks On Top Of The Charts

Next on the list is Katy Perry's song "Dark Horse" which is the third single from her fourth studio album, Prism. The song's debut on the Billboard Hot 100 was on October 5, 2013, and the song spent 57 weeks on the charts. "Dark Horse" peaked at spot number 1 on February 8, 2014, and it spent four weeks there.

4 "Firework" Spent 4 Weeks On Top Of The Charts

Let's move on to Katy Perry's song "Firework" which is the third single from her third studio album, Teenage Dream.

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The song's debut on the Billboard Hot 100 was on November 6, 2010, and the song spent 39 weeks on the charts. "Firework" peaked at spot number 1 on December 18, 2010, and it spent four weeks there.

3 "E.T." Spent 5 Weeks On Top Of The Charts

The song "E.T." featuring Kanye West, which was the fourth single from Katy Perry's third studio album, Teenage Dream is next. The song's debut on the Billboard Hot 100 was on September 4, 2010, and the song spent 30 weeks on the charts. "E.T." peaked at spot number 1 on April 9, 2011, and it spent five weeks there.

2 "California Gurls" Spent 6 Weeks On Top Of The Charts

Next on the list is Katy Perry's song "California Gurls" which is the lead single for her third studio album, Teenage Dream. The song's debut on the Billboard Hot 100 was on May 29, 2010, and the song spent 27 weeks on the charts. "California Gurls" peaked at spot number 1 on June 19, 2010, and it spent six weeks there.

1 "I Kissed A Girl" Spent 7 Weeks On Top Of The Charts

And finally, wrapping the list up is Katy Perry's song "I Kissed a Girl" which is the lead single from her second studio album, One of the Boys which was released in 2008. The song's debut on the Billboard Hot 100 was on May 24, 2008, and the song spent 23 weeks on the charts. "I Kissed a Girl" peaked at spot number 1 on July 5, 2008, and it spent an impressive seven weeks there. The song that put Katy Perry in the spotlight remains one of her biggest achievements. "I Kissed a Girl" was reportedly inspired by Hollywood star Scarlett Johansson.

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