The evolution of Miley Cyrus's tongue(01 of10)
Open Image ModalLAS VEGAS, NV - SEPTEMBER 21: Entertainer Miley Cyrus winks and sticks out her tongue as she performs during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images for Clear Channel) (credit:Getty Images)
The evolution of Miley Cyrus's tongue(02 of10)
Open Image ModalRobin Thicke, left, and Miley Cyrus perform at the MTV Video Music Awards on Sunday, Aug. 25, 2013, at the Barclays Center in the Brooklyn borough of New York. (Photo by Scott Gries/Invision/AP) (credit:AP)
The evolution of Miley Cyrus's tongue(03 of10)
Open Image ModalLAS VEGAS, NV - SEPTEMBER 21: Singers Miley Cyrus (L) and Jon Bon Jovi pose backstage during the 2012 iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2012 in Las Vegas, Nevada. (Photo by Isaac Brekken/Getty Images for Clear Channel) (credit:Getty Images)
The evolution of Miley Cyrus's tongue(04 of10)
Open Image ModalUS pop star and teen idol Miley Cyrus arrives at a private radio broadcaster for an interview and waves from a window in Bad Vilbel, Germany, 22 July 2013. The studio of the radio channel was surrounded by hundreds of fans. Photo: BORIS ROESSLER
The evolution of Miley Cyrus's tongue(05 of10)
Open Image ModalLOS ANGELES, CA - JUNE 12: Actress/singer Miley Cyrus arrives at the Myspace event at El Rey Theatre on June 12, 2013 in Los Angeles, California. (Photo by Gregg DeGuire/WireImage)
The evolution of Miley Cyrus's tongue(06 of10)
Open Image ModalNEW YORK - JULY 18: (U.S. TABS OUT) Singer and actress Miley Cyrus appears onstage during MTV's TRL at MTV Studios on July 18, 2008 in New York City. (Photo by Bryan Bedder/Getty Images) (credit:Getty Images)
The evolution of Miley Cyrus's tongue(07 of10)
Open Image ModalSinger Miley Cyrus performs on NBC's 'Today' Show Concert Series at Rockefeller Plaza in New York City.
The evolution of Miley Cyrus's tongue(08 of10)
Open Image ModalLOS ANGELES, CA - MAY 09: Miley Cyrus attends the 16th annual EIF Revlon Run/Walk for Women at Los Angeles Memorial Coliseum on May 9, 2009 in Los Angeles, California. (Photo by Jason LaVeris/FilmMagic)
The evolution of Miley Cyrus's tongue(09 of10)
Open Image ModalLOS ANGELES, CA - SEPTEMBER 07: Miley Cyrus arrives at the 2008 MTV Video Music Awards at Paramount Pictures Studios on September 7, 2008 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
The evolution of Miley Cyrus's tongue(10 of10)
Open Image ModalNEW YORK - JUNE 19: Actress Miley Cyrus attends the Licensing International Expo at the Jacob Javitz Center on June 19, 2007 in New York City. (Photo by Brad Barket/Getty Images) *** Local Caption *** Miley Cyrus