San Francisco 49ers cheerleaders perform during the first half of an NFL football game between the San Francisco 49ers and the San Diego Chargers in Santa Clara, Calif., Saturday, Dec. 20, 2014. (AP Photo/Ben Margot)

A Tampa Bay Buccaneers cheerleader during the fourth quarter of an NFL football game against the Green Bay Packers Sunday, Dec. 21, 2014, in Tampa, Fla. (AP Photo/Phelan M. Ebenhack)

An Oakland Raiders cheerleader performs during the first half of an NFL football game between the Oakland Raiders and the Buffalo Bills in Oakland, Calif., Sunday, Dec. 21, 2014. (AP Photo/Marcio Jose Sanchez)

Houston Texans cheerleaders perform during the first half of an NFL football game against the Baltimore Ravens Sunday, Dec. 21, 2014, in Houston.(AP Photo/David J. Phillip)

A Chicago Bears fan looks on during an NFL football game against the Detroit Lions on Sunday, December 21, 2014 at Soldier Field in Chicago, IL. (Todd Rosenberg/NFL)

Tampa Bay Buccaneers cheerleader Tricia during the first quarter of an NFL football game against the Green Bay Packers Sunday, Dec. 21, 2014, in Tampa, Fla. (AP Photo/Chris O'Meara)

A Houston Texans fan shows his Christmas spirit during the second half of an NFL football game against the Baltimore Ravens Sunday, Dec. 21, 2014, in Houston. (AP Photo/Patric Schneider)

Fans show their Christmas spirit during the first half of an NFL football game between the Houston Texans and the Baltimore Ravens Sunday, Dec. 21, 2014, in Houston. (AP Photo/David J. Phillip)

New York Jets cheerleaders perform during the first half of an NFL football game against the New England Patriots Sunday, Dec. 21, 2014, in East Rutherford, N.J. (AP Photo/Bill Kostroun)

New Orleans Saints cheerleaders perform in the first half of an NFL football game against the Atlanta Falcons in New Orleans, Sunday, Dec. 21, 2014. (AP Photo/Bill Haber)

New Orleans Saints cheerleaders perform in the first half of an NFL football game against the Atlanta Falcons in New Orleans, Sunday, Dec. 21, 2014. (AP Photo/Bill Haber)

A Carolina Panthers cheerleader performs in the first half of an NFL football game against the Cleveland Browns in Charlotte, N.C., Sunday, Dec. 21, 2014. (AP Photo/Bob Leverone)

Green Bay Packers fans during the second quarter of an NFL football game Tampa Bay Buccaneers Sunday, Dec. 21, 2014, in Tampa, Fla. (AP Photo/Brian Blanco)

Kansas City Chiefs fans watch the first half of an NFL football game between the Pittsburgh Steelers and the Kansas City Chiefs in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

A Washington Redskins cheerleader cheers on her team during an NFL football game against the Philadelphia Eagles at FedEx Field on Saturday December 20, 2014 in Landover, Maryland. (Aaron M. Sprecher/NFL)

San Diego Chargers cheerleaders perform during an NFL football between the San Diego Chargers and the Denver Broncos game Sunday, Dec. 14, 2014, in San Diego. (AP Photo/Denis Poroy) (AP Photo/Denis Poroy)

A Houston Texans fan watches warm-ups before an NFL football game between the Houston Texans and the Baltimore Ravens Sunday, Dec. 21, 2014, in Houston. (AP Photo/David J. Phillip)

An Eagles fan holds up a sign during the first half of an NFL football game between the Philadelphia Eagles and the Dallas Cowboys, Sunday, Dec. 14, 2014, in Philadelphia. (AP Photo/Michael Perez)

A Philadelphia Eagles' fan watches warm ups before an NFL football game against the Dallas Cowboys, Sunday, Dec. 14, 2014, in Philadelphia. (AP Photo/Matt Rourke)

A Seattle Seahawks fan wearing a Santa suit holds a list mocking San Francisco 49ers players during the first half of an NFL football game between the Seattle Seahawks and the San Francisco 49ers, Sunday, Dec. 14, 2014, in Seattle. (AP Photo/John Froschauer)

A Tennessee Titans fans cheers in the first half of an NFL football game between the Titans and the New York Jets Sunday, Dec. 14, 2014, in Nashville, Tenn. (AP Photo/James Kenney)

Tennessee Titans cheerleaders perform in the first half of an NFL football game between the Titans and the New York Jets Sunday, Dec. 14, 2014, in Nashville, Tenn. (AP Photo/Mark Zaleski)

Kansas City Chiefs cheerleaders sign autographs after their NFL football game against the Oakland Raiders Sunday, Dec. 14, 2014, in Kansas City, Mo. The Chiefs won 31-13. (AP Photo/Charlie Riedel)

The Indianapolis Colts cheerleaders perform before an NFL football game between the Indianapolis Colts and the Houston Texans in Indianapolis, Sunday, Dec. 14, 2014. (AP Photo/Darron Cummings)

The New England Patriots cheerleaders, wearing Santa Claus outfits, perform in the first half of an NFL football game between the Patriots and the Miami Dolphins Sunday, Dec. 14, 2014, in Foxborough, Mass. (AP Photo/Charles Krupa)

New England Patriots cheerleaders, wearing Santa Claus outfits, perform in the first half of an NFL football game between the Patriots and the Miami Dolphins Sunday, Dec. 14, 2014, in Foxborough, Mass. (AP Photo/Charles Krupa)

Seattle Seahawks Sea Gals cheerleaders perform before an NFL football game against the San Francisco 49ers, Sunday, Dec. 14, 2014, in Seattle. (AP Photo/Elaine Thompson)

The Indianapolis Colts cheerleaders perform during the first half of an NFL football game between the Indianapolis Colts and the Houston Texans in Indianapolis, Sunday, Dec. 14, 2014. (AP Photo/Darron Cummings)

Kansas City Chiefs cheerleaders dance during the second half of an NFL football game against the Oakland Raiders in Kansas City, Mo., Sunday, Dec. 14, 2014. (AP Photo/Charlie Riedel)

People dressed in Santa suits paddle on the Cumberland River by LP Field before an NFL football game between the Tennessee Titans and the New York Jets Sunday, Dec. 14, 2014, in Nashville, Tenn. (AP Photo/James Kenney)

The Indianapolis Colts cheerleaders perform during the first half of an NFL football game between the Indianapolis Colts and the Houston Texans in Indianapolis, Sunday, Dec. 14, 2014. (AP Photo/Darron Cummings)

Kansas City Chiefs cheerleaders celebrate a touchdown against the Oakland Raiders during the second half of an NFL football game in Kansas City, Mo., Sunday, Dec. 14, 2014. (AP Photo/Ed Zurga)

Kansas City Chiefs cheerleaders dance during the second half of an NFL football game against the Oakland Raiders in Kansas City, Mo., Sunday, Dec. 14, 2014. (AP Photo/Charlie Riedel)

A San Diego Chargers cheerleader performs before the Chargers face the Denver Broncos in an NFL football game Sunday, Dec. 14, 2014, in San Diego. (AP Photo/Denis Poroy)

A Baltimore Ravens cheerleader performs during the first half of an NFL football game against the Jacksonville Jaguars in Baltimore, Sunday, Dec. 14, 2014. (AP Photo/Nick Wass)

New England Patriots cheerleaders, wearing Santa Claus outfits, perform before an NFL football game between the Patriots and the Miami Dolphins Sunday, Dec. 14, 2014, in Foxborough, Mass. (AP Photo/Steven Senne)

New England Patriots cheerleaders, wearing Santa Claus outfits, perform before an NFL football game between the Patriots and the Miami Dolphins Sunday, Dec. 14, 2014, in Foxborough, Mass. (AP Photo/Charles Krupa)

A Cleveland Browns fan holds her wish list during warmups before an NFL football game between the Browns and Cincinnati Bengals Sunday, Dec. 14, 2014, in Cleveland. (AP Photo/Tony Dejak)

Santa Claus waves to the fans before an NFL football game between the Jacksonville Jaguars and the Baltimore Ravens in Baltimore, Sunday, Dec. 14, 2014. (AP Photo/Nick Wass)

Cleveland Browns fan Josh Dusseau dresses for the season for an NFL football game between the Browns and Cincinnati Bengals Sunday, Dec. 14, 2014, in Cleveland. (AP Photo/Tony Dejak)

The Tampa Bay Buccaneers cheerleaders perform during the second half of an NFL football game against the Green Bay Packers in Tampa, Fla., Sunday, Dec. 21, 2014. The Packers won 20-3. (AP Photo/Phelan M. Ebenhack)

An Oakland Raiders fan poses for photos outside of O.co Coliseum before an NFL football game between the Oakland Raiders and the Buffalo Bills in Oakland, Calif., Sunday, Dec. 21, 2014. (AP Photo/Marcio Jose Sanchez)

New York Jets cheerleaders perform during the first half of an NFL football game against the New England Patriots Sunday, Dec. 21, 2014, in East Rutherford, N.J. (AP Photo/Julio Cortez)

MIami Dolphins cheerleaders perform during the first half of an NFL football game against the Minnesota Vikings, Sunday, Dec. 21, 2014, in Miami Gardens, Fla. (AP Photo/Lynne Sladky)

A Chicago Bears fan wears a Christmas tree on her head as she watches warmups before an NFL football game between the Bears and Detroit Lions Sunday, Dec. 21, 2014, in Chicago. (AP Photo/Nam Y. Huh)

A Minnesota Vikings fans and Miami Dolphins fan sit together during the first half of an NFL football game, Sunday, Dec. 21, 2014, in Miami Gardens, Fla. (AP Photo/Lynne Sladky)