November 20, 2011; Baltimore, MD, USA; Baltimore Ravens cheerleaders entertain fans during the game against the Cincinnati Bengals at M&T Bank Stadium. Mandatory Credit: Mitch Stringer-US PRESSWIRE

Nov 20, 2011; Miami, FL, USA; Miami Dolphins cheerleader perform before a game against the Buffalo Bills at Sun Life Stadium. Mandatory Credit: Steve Mitchell-US PRESSWIRE

Nov 20, 2011; Landover, MD, USA; Washington Redskins cheerleader entertains the crowd during the first half against the Dallas Cowboys at FedEX Field. Mandatory Credit: Brad Mills-US PRESSWIRE

November 20, 2011; Baltimore, MD, USA; Baltimore Ravens cheerleaders entertained fans during the game against the Cincinnati Bengals at M&T Bank Stadium. Mandatory Credit: Mitch Stringer-US PRESSWIRE

Nov 20, 2011; Minneapolis, MN, USA; Minnesota Vikings cheerleader poses with mascot in an Army uniform during the game against the Oakland Raiders at the Metrodome. Mandatory Credit: Kirby Lee/Image of Sport-US PRESSWIRE

Nov 20, 2011; St. Louis, MO, USA; St. Louis Rams cheerleader performs during the first half of the game against the Seattle Seahawks at the Edward Jones Dome. Mandatory Credit: Photo by Scott Rovak-US PRESSWIRE

November 20, 2011; San Francisco, CA, USA; A cheerleader from the San Francisco 49ers team performs in the fourth quarter against the Arizona Cardinals at Candlestick Park. The 49ers defeated the Arizona Cardinals 23-7. Mandatory Credit: Cary Edmondson-US PRESSWIRE

Miami Dolphins cheerleaders during the second half of an NFL football game against the Buffalo Bills, Sunday, Nov. 20, 2011, in Miami Gardens, Fla. (AP Photo/Hans Deryk)

The Washington Redskins cheerleaders perform during the first half of an NFL football game against the Dallas Cowboys in Landover, Md., on Sunday, Nov. 20, 2011. (AP Photo/J. David Ake)

Nov 17, 2011; Denver, CO, USA; Denver Broncos cheerleader performs during the game against the New York Jets at Sports Authority Field. The Broncos defeated the Jets 17-13. Mandatory Credit: Ron Chenoy-US PRESSWIRE

A cheerleader is seen during the first half of an NFL football game between the Green Bay Packers and the Tampa Bay Buccaneers Sunday, Nov. 20, 2011, in Green Bay, Wis. (AP Photo/Jeffrey Phelps)

The Denver Broncos cheerleaders perform during an NFL football game between the Denver Broncos and the New York Jets Thursday, Nov. 17, 2011, in Denver. (AP Photo/Jack Dempsey)

A Denver Broncos cheerleader performs during an NFL football game between the Denver Broncos and the New York Jets Thursday, Nov. 17, 2011, in Denver. (AP Photo/Jack Dempsey)

Denver Broncos cheerleader performs during a NFL football game against the New York Jets, Thursday, November 17, 2011 in Denver. The Broncos won the game 17-13. (AP Photo/Paul Jasienski)

The Washington Redskins cheerleaders perform during the first half of an NFL football game against the Dallas Cowboys in Landover, Md., on Sunday, Nov. 20, 2011. (AP Photo/Pablo Martinez Monsivais)

A Washington Redskins cheerleader performs during the first half of an NFL football game against the Dallas Cowboys in Landover, Md., on Sunday, Nov. 20, 2011. (AP Photo/Pablo Martinez Monsivais)

Miami Dolphins Cheerleaders are shown during the first half of an NFL football game between the Miami Dolphins and the Buffalo Bills, Sunday, Nov. 20, 2011, in Miami Gardens, Fla. (AP Photo/Wilfredo Lee)

A San Francisco 49ers cheerleader performs before an NFL football game against the Arizona Cardinals in San Francisco, Calif., Sunday, Nov. 20, 2011. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers cheerleaders perform before an NFL football game against the Arizona Cardinals in San Francisco, Calif., Sunday, Nov. 20, 2011. (AP Photo/Marcio Jose Sanchez)

Minnesota Vikings cheerleaders wear military costumes as they perform during the second half of an NFL football game against the Oakland Raiders Sunday, Nov. 20, 2011, in Minneapolis. (AP Photo/Andy King)

The Washington Redskins cheerleads run across field during the first half of an NFL football game against the Dallas Cowboys in Landover, Md., on Sunday, Nov. 20, 2011. (AP Photo/J. David Ake)

Minnesota Vikings cheerleaders wear military costumes as they perform during the second half of an NFL football game against the Oakland Raiders Sunday, Nov. 20, 2011, in Minneapolis. (AP Photo/Andy King)

Atlanta Falcons cheerleaders perform during the first half of an NFL football game against the Tennessee Titans, Sunday, Nov. 20, 2011, in Atlanta. (AP Photo/John Bazemore)

Minnesota Vikings cheerleader during the second half of an NFL football game between the Vikings and the Oakland Raiders Sunday, Nov. 20, 2011, in Minneapolis. (AP Photo/Jim Mone)