Christina Aguilera Makes First Red Carpet Appearance Since Giving Birth to Baby Girl Summer!

Christina Aguilera makes her first red carpet appearance since welcoming her baby daughter Summer at the 2014 Breakthrough Prize Awards Ceremony held at NASA Ames Research Center on Sunday evening (November 9) in Mountain View, Calif. The 33-year-old entertainer walked the carpet with her fiance Matthew Rutler just three months after giving birth – she