Dianna Agron, singer and actress, performs for audience members during the USO holiday Troop Visit on Royal Air Force Mildenhall, England, Dec. 10, 2014. Dianna Agron, singer and actress, performs for audience members during the USO holiday Troop Visit on Royal Air Force Mildenhall, England, Dec. 10, 2014. SHARE IMAGE: Download Image: Full Size (1.21 MB) Tags: Photo Essays Photo By: VIRIN: 919064-E-QVU28-474.jpg Photo Gallery