'Ew!' Taylor Swift grosses out Jimmy Fallon in 'Tonight Show' skit

"The Tonight Show's" popular sketch "Ew!" often features host Jimmy Fallon and his male guests portraying unattractive teenage girls, but on Wednesday, Fallon got the very attractive Taylor Swift to don a dorky getup for the latest edition of the bit.

Her Natalie — who had glasses, braces and pigtails with a bonus ponytail on top of her head, and wore a pink sweater tank featuring a raccoon — seemed timid next to Fallon's loud and obnoxious Sara. And when Natalie had an adorable little sneeze during show and tell, Sara was not pleased.

"Ew! Gross! You're sneezing snot all over the place!" Fallon's Sara screamed.

The singer later revealed that she'd put a lot of thought into developing Natalie for "Ew!"

"I got really deep with the character," Swift told Fallon, and revealed that some of the things Natalie liked (building popsicle-stick castles, for example), were straight from her childhood.

She even spent some time getting into character before her "Tonight" appearance.

As for those oh-so-attractive fake braces she wore for "Ew," the singer said she was highly impressed by their quality. "I show up today and (Fallon) gives me this sort of Invisalign with braces attached," Swift explained. "You guys are so high-tech."

And she should know. Swift wore fake braces for a "Saturday Night Live" sketch four years ago, but they were nowhere near as fancy. "They gave me this kind of, like, braces-retainer, but the teeth came on it. Like, the teeth were attached," she explained.

Fallon, who's a former cast member on "SNL," couldn't help but make a joke at the sketch-comedy show's expense. While crowing about "Tonight's" props, he called the braces they used for "Ew!" "perfect, nice, beautiful braces ... not like that 'SNL' crap!"

But the chat with the singer wasn't all about Natalie. Swift confirmed to Fallon that she will indeed be performing at Sunday's Video Music Awards show. "I'm getting a call from MTV later," she joked about spilling the news.

"The Tonight Show" airs weeknights at 11:35 on NBC. The VMAs air Sunday at 8 p.m. on MTV.

  • Slideshow Photos

    Image: Taylor Swift

    Taylor Swift

    Country music’s teen superstar is making a splash from Nashville to Hollywood.

  • Taylor Swift

    of

    Taylor and Timberlake -

    Singer Taylor Swift, left, and Justin Timberlake, right, perform a skit during the Walmart shareholders' meeting in Fayetteville, Ark., on June 1, 2012. Swift has been a star since her early teens, and was described by the New York Times and Rolling Stone as one of music's best songwriters.

    April L Brown / AP
  • Taylor Swift

    of

    Entertainer of the year -

    Swift accepts the Entertainer Of The Year Award onstage at the 47th Annual Academy Of Country Music Awardsin Las Vegas on April 1, 2012.

    Ethan Miller / Getty Images
  • Taylor Swift

    of

    Honored by the first lady -

    Swift accepts The Big Help award from First Lady Michelle Obama onstage at Nickelodeon's 25th Annual Kids' Choice Awards in Los Angeles on March 31, 2012.

    Kevork Djansezian / Getty Images
  • Taylor Swift

    of

    Down Under -

    Swift performs live in Perth, Australia on March 2, 2012.

    Paul Kane / Getty Images
  • Taylor Swift

    of

    Loving the Lorax -

    Swift arrives at the premiere of 'Dr. Seuss' The Lorax' at Universal Studios Hollywood in Universal City, Calif on Feb. 19, 2012. She voices a character named Audrey in the film.

    Jason Merritt / Getty Images
  • Taylor Swift

    of

    Cover girl -

    Swift appears on the cover of the February 2012 issue of Vogue.

    AP
  • Taylor Swift

    of

    Grammy girl -

    Swift won Grammys for best country solo performance and best country song, both for "Mean," " at the 54th Grammy Awards in Los Angeles in February 2012.

    Frederic J. Brown / AFP/Getty Images
  • Taylor Swift

    of

    Smell like Swift -

    Swift launches her debut fragrance, "Wonderstruck," at Macy's Herald Square in New York on Oct. 13, 2011.

    Evan Agostini / AP
  • Taylor Swift

    of

    Opry singer -

    Swift takes the stage during the Grand Ole Opry 85th birthday bash at the Grand Ole Opry House in Nashville, Tenn., on Oct. 9, 2010.

    Tony R. Phipps / Getty Images
  • Taylor Swift

    of

    That was 'Easy' -

    Swift, right, jons actress Emma Stone, star of the film "Easy A," at the premiere of the film in Los Angeles, on Sept. 13, 2010.

    Chris Pizzello / AP
  • Taylor Swift

    of

    Tap those feet -

    Swift performs at the MTV Video Music Awards in Los Angeles on Sept. 12, 2010.

    Matt Sayles / AP
  • Taylor Swift

    of

    Maine attraction -

    Swift greets her fans after performing in Kennebunkport, Maine, on Aug. 27, 2010. The singer filmed her music video for the single "Mine" in the town made famous as a vacation spot for the family of President George H.W. Bush.

    Robert F. Bukaty / AP
  • Taylor Swift

    of

    A lot of hardware -

    Swift poses in the press room with her four awards during the 52nd Annual Grammy Awards at Staples Center in Los Angeles on Sunday, Jan. 31, 2010.

    Kevork Djansezian / Getty Images
  • Taylor Swift

    of

    In good company -

    Katy Perry, left, Swift, Rihanna and Fergie pose during the 52nd Annual Grammy Awards -- Salute To Icons Honoring Doug Morris at The Beverly Hilton Hotel in Beverly Hills, Calif., on Saturday, Jan. 30, 2010.

    Larry Busacca / Getty Images
  • Taylor Swift

    of

    A Swift response -

    Swift performs at the "Hope for Haiti Now: A Global Benefit for Earthquake Relief" in Los Angeles on Friday, Jan. 22, 2010.

    Mark Davis / AP
  • Taylor Swift

    of

    Taking in the big show -

    Swift, left, and Sony CEO Howard Stringer speak at the Sony booth at the Consumer Electronics Show in Las Vegas on Wednesday, Jan. 6, 2010.

    Paul Sakuma / AP
  • Taylor Swift

    of

    Thanking her people -

    Swift accepts the award for favorite female artist during the People's Choice Awards 2010 at Nokia Theatre L.A. Live in Los Angeles on Jan. 6, 2010.

    Kevin Winter / Getty Images
  • Taylor Swift

    of

    Holiday spirit -

    John Mayer performs with Swift during Z100's Jingle Ball 2009 concert at Madison Square Garden in New York on Dec. 11, 2009. On her new album, due out Oct. 25, 2010, Swift addresses a reported romance with Mayer in a song called "Dear John."

    Jason Szenes / EPA
  • Taylor Swift

    of

    Country superstar -

    Swift accepts the female vocalist of the year award as presenters Lee Ann Womack, left, and Kris Kristofferson look on at the 43rd annual Country Music Association Awards in Nashville, Tenn., on Nov. 11, 2009.

    Tami Chappell / Reuters
  • Taylor Swift

    of

    Song remains the same -

    For the second year in a row, Swift holds her songwriting award as she attends the 57th Annual BMI Country Awards in Nashville, Tenn., on Tuesday, Nov. 10.

    Peter Kramer / AP
  • Taylor Swift

    of

    Taylor times two -

    Swift, left, and Taylor Lautner attend the NHL game between the Columbus Blue Jackets and the Los Angeles Kings at Staples Center in Los Angeles on Oct. 25, 2009.

    Andrew D. Bernstein / Getty Images
  • Taylor Swift

    of

    They're jammin' -

    Jason Aldean, from left, Hillary Scott, Swift, Charles Kelly, Faith Hill and Dave Haygood perform at the "We're All For The Hall" benefit for the Country Music Hall of Fame at the Sommet Center in Nashville, Tenn., on Oct. 13, 2009.

    Larry Busacca / Getty Images
  • Taylor Swift

    of

    Runway watcher -

    Swift, right, and Penn Badgley, who plays Dan on "Gossip Girl," watch the Tommy Hilfiger spring 2010 collection during Fashion Week in New York on Sept. 17, 2009.

    Diane Bondareff / AP
  • Taylor Swift

    of

    An infamous moment -

    Singer-rapper Kanye West takes the microphone from Swift as she accepts the best female video award during the MTV Video Music Awards in New York on Sept. 13, 2009. Later in the show, Swift got her chance to finish her acceptance speech.

    Jason Decrow / AP
  • Taylor Swift

    of

    Dancing in the streets -

    Swift performs on the street outside Radio City Music Hall during the MTV Video Music Awards in New York on Sept. 13, 2009.

    Charles Sykes / AP
  • Taylor Swift

    of

    From the heart -

    Swift poses in front of her newly unveiled star at Mohegan's "Walk of Fame" in Uncasville, Conn., on Aug. 28, 2009. The teenage singer has snagged at least two Country Music Award nominations, including one for the show's highest honor: entertainer of the year.

    Thomas Cain / AP
  • Taylor Swift

    of

    Rockin' out -

    Swift performs during a concert at New York's Madison Square Garden on Aug. 27, 2009, as part of her "Fearless" tour, her first as a headliner.

    Stephen Chernin / AP
  • Taylor Swift

    of

    Mixing country and rock 'n roll -

    Swift and Joe Elliott of Def Leppard perform at the CMT Music Awards in Nashville, Tenn., on June 16, 2009.

    Mark Humphrey / AP
  • Taylor Swift

    of

    Hitting the keys -

    Swift performs at the CMA Music Festival at in Nashville, Tenn., on June 14, 2009.

    Josh Anderson / AP
  • Taylor Swift

    of

    Wearing many hats -

    T-Pain, left, and Swift rehearse for the 2009 CMT Music Awards at the Sommet Center on June 9 in Nashville, Tenn.

    Austin K. Swift / Getty Images
  • Taylor Swift

    of

    Teen star power -

    Actress-singer Miley Cyrus, left, and Swift arrive at the premiere of Walt Disney Picture's "Hannah Montana: The Movie" at at the El Captian Theatre in Hollywood, Calif., on April 2, 2009.

    Jeff Vespa / WireImage
  • Taylor Swift

    of

    The love is gone -

    Swift and then-boyfriend Joe Jonas at the 2008 MTV Video Music Awards at Paramount Pictures Studios in Los Angeles on Sept. 7, 2008. Jonas reportedly broke up with her over the phone.

    Jeff Kravitz / FilmMagic
  • Taylor Swift

    of

    Gripping image -

    Swift, left, and Kellie Pickler pose backstage during the Academy Of Country Music New Artists' Show at the MGM Grand Ballroom in Las Vegas on May 14, 2007.

    Michael Buckner / Getty Images
  • Taylor Swift

    of

    A star is born -

    Swift accepts the award for "Breakthrough Video of the Year" for the song "Tim McGraw" onstage at the 2007 CMT Music Awards at Belmont University in Nashville, Tenn., on April 16, 2007.

    Peter Kramer / Getty Images
  • Taylor Swift

    of

    Playing the field -

    Swift sings the National Anthem before a baseball game between the Los Angeles Dodgers and the Colorado Rockies on opening day at Dodger Stadium in Los Angeles on April 9, 2007.

    Jeff Gross / Getty Images

Follow Anna Chan on Google+.

TOP