Miley Cyrus performs in concert during the Hot 99.5 Jingle Ball at the Verizon Center on Dec. 16, 2013, in Washington.
Barack Obama and Mariah Carey
President Barack Obama kisses performer Mariah Carey after she sang at the 91st national Christmas tree lighting ceremony on the Ellipse south of the White House Dec. 6, 2013, in Washington, DC.
Janelle Monae
Singer-songwriter Janelle Monae performs during the National Christmas Tree lighting ceremony at the Ellipse Dec. 6, 2013, in Washington, DC.
Jane Lynch
Actress Jane Lynch hosts the National Christmas Tree lighting ceremony at the Ellipse Dec. 6, 2013 in Washington, DC.
Lorde
Singer Lorde performs onstage during The 24th Annual KROQ Almost Acoustic Christmas at The Shrine Auditorium on Dec. 8, 2013, in Los Angeles.
Mariah Carey
Mariah Carey performs during the National Christmas Tree lighting ceremony at the Ellipse Dec. 6, 2013 in Washington, DC.
Princess Charlene
Prince Albert II of Monaco' s wife, Princess Charlene distributes presents to children, at the traditional Christmas tree viewing at the Monaco palace, Dec. 18, 2013. This event takes place every year ahead of Christmas.
Wynonna Judd
Country music artist Wynonna Judd performs in concert during her "A Simpler Christmas Tour 2013" at the Strand Capitol Performing Arts Center on Dec. 22, 2013, in York, Pa.
Adrian Grenier
Actor Adrian Grenier helps celebrate the holidays with LACOSTE Fragrances at Time Warner Center on Dec. 14, 2013, in New York.
Barack Obama
President Barack Obama and first lady Michelle Obama, along with daughters Malia, left, and Sasha, sing during the finale of TNT's "Christmas in Washington" on Dec. 15, 2013, in Washington, DC. The program benefits the Children's National Health System. Also shown are the president's mother-in-law, Marian Robinson, and the program's host, actor Hugh Jackman.
Bijou Phillips
From left, Jordan Masterson, Alanna Masterson, Bijou Phillips and Danny Masterson attend the Church of Scientology Celebrity Centre's 21st "Christmas Stories" at the Church of Scientology Celebrity Centre on Dec. 14, 2013, in Los Angeles. "Christmas Stories" benefits the Hollywood Police Department's Youth Development Programs for underprivileged children.
Dita Von Teese
Dita Von Teese and Jodi Lyn O'Keefe attend Geoff Stults and Ari Sandel's Holiday Party with elit by Stolichnaya on Dec. 7, 2013, in Los Angeles.
Billy Ray Cyrus
Billy Ray Cyrus and Santa Claus attend The Hollywood Christmas Parade Benefiting Toys For Tots Foundation on Dec. 1, 2013, in Hollywood, Calif.
Stevie Wonder
Singer Stevie Wonder performs at the 82nd Annual Hollywood Christmas Parade on Dec. 1, 2013, in Hollywood, Calif.
Goo Goo Dolls
Members of Goo Goo Dolls perform at the 82nd Annual Hollywood Christmas Parade on Dec. 1, 2013, in Hollywood, Calif.
Michael W. Smith and Jennifer Nettles
Michael W. Smith and Jennifer Nettles perform during the CMA 2013 Country Christmas on Nov. 8, 2013, in Nashville, Tenn.
Richie Sambora
Richie Sambora performs at the 82nd Annual Hollywood Christmas Parade on Dec. 1, 2013, in Hollywood, Calif.
Jimmy Fallon
Jimmy Fallon attends the 87th annual Macy's Thanksgiving Day Parade on Nov. 28, 2013, in New York.
Joan Jett
Joan Jett attends the 87th Annual Macy's Thanksgiving Day Parade on Nov. 28, 2013, in New York.
Kristen Chenoweth
Kristen Chenoweth attends the 87th Annual Macy's Thanksgiving Day Parade on Nov. 28, 2013, in New York.
Gavin DeGraw
Gavin DeGraw attends the 87th annual Macy's Thanksgiving Day Parade on Nov. 28, 2013, in New York.
Kellie Pickler
Kellie Pickler attends the 87th annual Macy's Thanksgiving Day Parade on Nov. 28, 2013, in New York.
Ariana Grande
Ariana Grande attends the 87th annual Macy's Thanksgiving Day Parade on Nov. 28, 2013, in New York.
Richard Simmons
Richard Simmons attends the 87th Annual Macy's Thanksgiving Day Parade on Nov. 28, 2013, in New York.
Fall Out Boy
Fall Out Boy attends the 87th annual Macy's Thanksgiving Day Parade on Nov. 28, 2013, in New York.
Gwyneth Paltrow
Gwyneth Paltrow poses before launching Paris' department store "Printemps Haussmann" Christmas decorations on Nov. 7, 2013, in Paris.
Mary J Blige and Jennifer Nettles
Mary J Blige and Jennifer Nettles perform during the CMA 2013 Country Christmas on Nov. 8, 2013, in Nashville, Tenn.
Lady Antebellum
Charles Kelley, Dave Haywood and Hillary Scott of Lady Antebellum perform during the CMA 2013 Country Christmas on Nov. 8, 2013, in Nashville, Tenn.
Lucy Hale
Lucy Hale performs during the CMA 2013 Country Christmas on Nov. 8, 2013, in Nashville, Tenn.
Kellie Pickler
Kellie Pickler performs during the CMA 2013 Country Christmas on Nov. 8, 2013, in Nashville, Tenn.
Leona Lewis
Leona Lewis performs before the Regent Street Christmas lights are switched on at Regent Street on Nov. 9, 2013, in London
Jordin Sparks and Jason Derulo
Jordin Sparks and Jason Derulo perform "Baby It's Cold Outside'' during a taping for the 'Disney Parks Christmas Day Parade' television special at Disneyland on Nov. 9, 2013, in Anahiem, Calif. 'Disney Parks Christmas Day Parade' airs Dec. 25 on ABC.
Nick Cannon
Nick Cannon meets Pluto during a break from taping the 'Disney Parks Christmas Day Parade' television special at Disneyland on Nov. 10, 2013, in Anaheim, Calif. "Disney Parks Christmas Day Parade" airs Dec. 25 on ABC.
Conor Maynard
Conor Maynard performs at the switching on of the Oxford Street Christmas lights at Selfridges with Jessie J and James Arthur to crowd 10,000 at Oxford Street on Nov. 12, 2013, in London.
Jessie J
Jessie J performs at the switching on of the Oxford Street Christmas lights at Selfridges with James Arthur and Conor Maynard to crowd 10,000 at Oxford Street on Nov. 12, 2013, in London.
Trace Adkins
Trace Adkins performs during "The Christmas Show" Tour. A night of narration, history and soul-stirring Celtic on Nov. 14, 2013, in Nashville, Tenn.
Susan Boyle
Susan Boyle at Magic FM studios recording her Magic FM Christmas Special with Neil Fox on Nov. 12, 2013, in London.
Kenny Loggins
Musician Kenny Loggins promotes his Christmas book "Frosty the Snowman" at a private photo shoot in Rockefeller Center on Nov. 21, 2013, in New York.
Gwyneth Paltrow
Gwyneth Paltrow launches rintemps Christmas Decorations Inauguration at Printemps Haussmann on Nov. 7, 2013, in Paris.
Darius Rucker
Darius Rucker performs during the CMA 2013 Country Christmas on Nov. 8, 2013, in Nashville, Tenn.
Kellie Pickler
Kellie Pickler performs during the CMA 2013 Country Christmas on Nov. 8, 2013, in Nashville, Tenn.
Sheryl Crow
Sheryl Crow performs during the CMA 2013 Country Christmas on Nov. 8, 2013, in Nashville, Tenn.
Jake Owen
Jake Owen performs during the CMA 2013 Country Christmas on Nov. 8, 2013, in Nashville, Tenn.