Trisha Yearwood performs at USO Gala in Washington D.C.

PD Photo: American Country Music singer and actress Trisha Yearwood performs at the USO Gala in Washington, D.C., USA, on October 7, 2010 - DOD photo by U.S. Navy Petty Officer 1st Class Chad J. McNeeley.

Jessica Simpson, American singer and actress

American singer, actress and television personality Jessica Simpson sings the US National Anthem during the opening ceremonies for the 2009 AT&T National at Congressional Country Club, Bethesda, MD. The tournament was hosted by the PGA and the Tiger Woods Foundation in honor of all the men and women of the United States Armed Forces on July 1, 2009 - photo by Christopher Wellner.

Jessica Simpson and her father and manager Joe Simpson pose for a snapshot on the flight line at Camp Buehring, Kuwait, on March 10, 2008. Simpson toured the camp and visited with US troops the day before performing at the Operation: MySpace concert in the evening - U.S. Army photo by PFC. David J. Marshall.

Jessica Simpson and Nick Lachey at publicity shoot for the MTV Video Music Awards at ISC Miami on 29 August 2004, USCG photo by PA2 Anastasia Burns.

Jessica Simpson performs during a USO/ DoD Celebrity Tour at Eagle Base on 14 November 2001: US Army-Military photo.

Victoria's Secret Angels at Guantanamo Bay Christmas Parade 2007

Photo: Victoria's Secret Angels Adriana Lima, Marisa Miller and Selita Ebanks ride for the Christmas Parade in the Guantanamo Bay, Cuba, on December 1, 2007 as part of a USO tour, during which the models visited troops stationed here during the holidays (JTF Guantanamo photo by Navy Petty Officer 3rd Class William Weinert).