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"There's only one man for Selena Gomez \u2014 and it's definitely not Justin Bieber. It's Mario (of Mario and Luigi), who else? \nTuesday night, the Spring Breakers star donned a fake mustache and a Princess Peach crown and crooned a love song with Jimmy Fallon (dressed as Mario, himself). The two sang a cover of Sam Hart's \"Mario Kart Love Song,\" which chronicles the passion between a toad and a princess as they dodge blue shells together on Rainbow Road. \nSEE ALSO: Watch Justin Timberlake's Hilarious Moments From 'Timberweek'\n \nGomez has been making lots of late night news lately. On Monday night, she admitted to David Lettermen that she once had Justin Beiber in tears. \n\nBut we preferred the star's adorable duet on Late Night With Jimmy Fallon to her dig at an ex-boyfriend. Wala wala wala waluigi on, Jimmy and Selena. \nBONUS: 15 Celebrities Before They Were Famous\n\n\n15 Celebrities Before They Were Famous\n\n\n\n\n\n\n\n1. Lady Gaga\n\nLady Gaga, formerly known by her legal name Stefani Germanotta, performed this original song at NYU's annual talent show. \nYou can hear the beginnings of Gaga's hit \"Poker Face\" in this song, however, Germanotta only placed third in the talent show. \n\n\n\n\n\n\n\n\n\n\n\n2. Louis C.K.\n\nBefore Louis C.K. was considered a leader in comedy, he was working up the courage to do standup around Boston. \nToday, C.K. drops all existing material and starts over every year, but this act from 1987 shows a young version of the comedian's familiar, sarcastic attitude.\nNote: If you're at work, keep the volume down. The language is NSFW.\n\n\n\n\n\n\n\n\n\n\n\n3. Justin Timberlake\n\nSinger and actor Justin Timberlake was performing onstage long before he became a member of boy band *NSYNC. \nHere, a young Timberlake performs on the talent show Star Search around the same time he was a mouseketeer. Today, the performer has maintained a successful solo career.\n\n\n\n\n\n\n\n\n\n\n\n4. Angelina Jolie\r\n\n\nThis video shows Angelina Jolie's acting debut as Tosh in the 1982 film Lookin' To Get Out. \nAt just seven years-old, the award-winning actress was younger than some of her children today.\n\n\n\n\n\n\n\n\n\n\n\n5. Scarlett Johannson\n\nIn 1993, a nine-year-old Scarlett Johannsson was just beginning her career as an actress, as shown in this audition tape. \nJohannsson debuted a year later in the comedy North. \n\n\n\n\n\n\n\n\n\n\n\n6. Fergie\n\nStacy \"Fergie\" Ferguson was singing on the TV show Kids Incorporated before she became a member of The Black Eyed Peas. (Fun fact: Even earlier, she was the voice of Sally in the Peanuts cartoons.)\nToday, Fergie is still a B.E.P. band member and has an established solo career.\n\n\n\n\n\n\n\n\n\n\n\n7. Ryan Gosling\n\nActor Ryan Gosling was one of many other celebrities within the Mickey Mouse Club. Today, Gosling has become an award-winning actor, known for his roles in The Notebook and Drive. \nThis clip of him as a kid shows the same charm he uses to woo the ladies today.\n\n\n\n\n\n\n\n\n\n\n\n8. The Olsen Twins\n\nMary-Kate and Ashley Olsen grew up to become two of the most successful child stars to-date. \nThe twins tapped in on a franchise at a very early age, beginning with film series like The Adventures of Mary-Kate and Ashley and You're Invited to Mary-Kate and Ashley's....\n\n\n\n\n\n\n\n\n\n\n\n9. Leonardo Dicaprio\n\nA rambunctious, five-year-old Leonardo DiCaprio got started on a show called Romper Room, which unfortunately shares no clips of him online.\nHowever, the actor eventually worked his way up to film roles, like Inception. This video shows some of the commercial work DiCaprio did in between.\n\n\n\n\n\n\n\n\n\n\n\n10. Zach Galafianakis\n\nComedian Zach Galafianakis was writing comedy behind the scenes before he was known for being in front of the camera in films like The Hangover.\nIn this clip, he acts on a shortly-lived MTV sketch comedy called Apt. 2F \n\n\n\n\n\n\n\n\n\n\n\n11. Katy Perry\n\nKatheryn Hudson switched from Christian singer to candy-coated pop star Katy Perry after 2007. \nToday, the Grammy-nominated singer is the only artist to spend more than 52 consecutive weeks in the top 10 of Billboard's Hot 100.\n\n\n\n\n\n\n\n\n\n\n\n12. Stephen Colbert and Steve Carell\n\nThough it was cancelled before the complete first season, the Dana Carvey Show featured some of the most successful comedians to date, including Stephen Colbert, Steve Carell, Charlie Kaufman and Louis C.K.\nThis clip is a sketch from the show, featuring a young Colbert and Carell, before their more recent TV fame.\n\n\n\n\n\n\n\n\n\n\n\n13. Natalie Portman\n\nIn 1994, Natalie Portman made her acting debut in the film Leon: The Professional. This clip is from her audition for the role of Mathilda.\nAfter her breakout role in the Star Wars prequel trilogy, Portman went on to become an award-winning actress.\n\n\n\n\n\n\n\n\n\n\n\n14. Beyonc\u00E9 Knowles\n\nSinger Beyonc\u00E9 was part of Girl's Tyme, the group that would eventually become Destiny's Child, before she was known for her successful solo career. \nThis video shows Beyonc\u00E9 competing with Girl's Tyme on Star Search, but losing to the band Skeleton Crew.\n\n\n\n\n\n\n\n\n\n\n\n15. Kristen Stewart\n\nTwilight's leading lady Kristen Stewart has been acting since she was a child. \nThe actress was in a variety of films as a kid, but this clip proves she was also doing commercials. \n\n\n\n\n\n\n\n"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2013/03/20/selena-gomez-fallon-mario-kart/>