A Minnesota Vikings cheerleader poses for a photograph during a photo shoot on Regent Street in London. (Dave Shopland/NFL)

Minnesota Vikings cheerleaders pose for a photograph during a photo shoot on Regent Street in London. (Dave Shopland/NFL)

Minnesota Vikings cheerleaders pose for a photograph during a photo shoot on Regent Street in London. (Dave Shopland/NFL)

Minnesota Vikings cheerleaders pose for a photograph during a photo shoot on Regent Street in London. (Dave Shopland/NFL)

A New England Patriots cheerleader performs prior to an NFL football game against the Tampa Bay Buccaneers at Gillette Stadium on September 22, 2013 in Foxboro, Massachusetts. New England won 23-3. (Aaron M. Sprecher/NFL)

A Baltimore Ravens cheerleader does an aerial flip during the NFL week 3 football game against the Houston Texans on Sunday, Sept. 22, 2013 in Baltimore. The Ravens won the game 30-9. (AP Photo/Paul Spinelli)

New Orleans Saints cheerleaders perform before an NFL football game against the Arizona Cardinals in New Orleans, Sunday, Sept. 22, 2013. (AP Photo/Gerald Herbert)

New York Jets cheerleaders perform during the first half of an NFL football game against the Buffalo Bills Sunday, Sept. 22, 2013, in East Rutherford, N.J. (AP Photo/Seth Wenig)

Seattle Seahawks Sea Gals cheerleaders perform during an NFL football game against the Jacksonville Jaguars, Sunday, Sept. 22, 2013, in Seattle. (AP Photo/Stephen Brashear)

A Tennessee Titans cheerleader performs in the second quarter of an NFL football game between the Titans and the San Diego Chargers on Sunday, Sept. 22, 2013, in Nashville, Tenn. (AP Photo/Mark Zaleski)

New Orleans Saints cheerleaders perform in the first half of an NFL football game against the Arizona Cardinals in New Orleans, Sunday, Sept. 22, 2013. (AP Photo/Bill Feig)

Cincinnati Bengals cheerleaders perform during the first half of an NFL football game against the Green Bay Packers, Sunday, Sept. 22, 2013, in Cincinnati. (AP Photo/David Kohl)

A Washington Redskins cheerleader performs during the first half of a NFL football game against Detroit Lions in Landover, Md., Sunday, Sept. 22, 2013. (AP Photo/Richard Lipski)

Minnesota Vikings cheerleaders perform during the first half of an NFL football game between the Minnesota Vikings and the Cleveland Browns Sunday, Sept. 22, 2013, in Minneapolis. (AP Photo/Jim Mone)

A Carolina Panthers cheerleader performs during the first half of an NFL football game against the New York Giants in Charlotte, N.C., Sunday, Sept. 22, 2013. (AP Photo/Mike McCarn)

New Orleans Saints cheerleaders perform in the first half of an NFL football game against the Arizona Cardinals in New Orleans, Sunday, Sept. 22, 2013. (AP Photo/Bill Feig)

A member of the Dallas Cowboys cheerleaders performs during an NFL football game against the St. Louis Rams, Sunday, Sept. 22, 2013, in Arlington, Texas. (AP Photo/Tony Gutierrez)

Minnesota Vikings cheerleaders run off the field during the first half of an NFL football game between the Minnesota Vikings and the Cleveland Browns Sunday, Sept. 22, 2013, in Minneapolis. (AP Photo/Charlie Neibergall)

Dallas Cowboys cheerleader perform before an NFL football game between the St. Louis Rams and Dallas Cowboys Sunday, Sept. 22, 2013, in Arlington, Texas. (AP Photo/LM Otero)

A Carolina Panthers cheerleader performs during the first half of an NFL football game between the Carolina Panthers and the New York Giants in Charlotte, N.C., Sunday, Sept. 22, 2013. (AP Photo/Mike McCarn)

The Washington Redskins cheerleaders run onto the field before a NFL football game against the Detroit Lions in Landover, Md., Sunday, Sept. 22, 2013. (AP Photo/Alex Brandon)

Miami Dolphins cheerleaders perform during the first half of an NFL football game against the Atlanta Falcons, Sunday, Sept. 22, 2013 in Miami Gardens, Fla. (AP Photo/Wilfredo Lee)

Cincinnati Bengals cheerleaders perform during in the second half of an NFL football game against the Green Bay Packers, Sunday, Sept. 22, 2013, in Cincinnati. (AP Photo/David Kohl)

The Dallas Cowboys cheerleaders perform during the first quarter of a NFL football game against the St. Louis Rams Sunday, Sept. 22, 2013, in Arlington, Texas. (AP Photo/LM Otero)

A San Francisco 49ers cheerleader performs during an NFL football game against the Indianapolis Colts in San Francisco, Sunday, Sept. 22, 2013. (AP Photo/Marcio Jose Sanchez)

Dallas Cowboys cheerleaders perform during an NFL football game against the St. Louis Rams on Sunday, September 22, 2013, at AT&T Stadium in Arlington, Texas. The Cowboys defeated the Rams, 31-7. (AP Photo/James D. Smith)

Tennessee Titans cheerleaders perform in the second quarter of an NFL football game between the Titans and the San Diego Chargers on Sunday, Sept. 22, 2013, in Nashville, Tenn. (AP Photo/Wade Payne)

New York Jets cheerleaders perform during the second half of an NFL football game against the Buffalo Bills Sunday, Sept. 22, 2013, in East Rutherford, N.J. (AP Photo/Bill Kostroun)

Tennessee Titans cheerleaders perform in the second quarter of an NFL football game between the Titans and the San Diego Chargers on Sunday, Sept. 22, 2013, in Nashville, Tenn. (AP Photo/Wade Payne)

Miami Dolphins cheerleaders perform during the first half of an NFL football game against the Atlanta Falcons, Sunday, Sept. 22, 2013 in Miami Gardens, Fla. (AP Photo/Wilfredo Lee)

The New England Patriots cheerleaders perform in the first half of an NFL football game against the Tampa Bay Buccaneers Sunday, Sept. 22, 2013, in Foxborough, Mass. (AP Photo/Elise Amendola)