Christina Aguilera celebrates her daughter Summer's ninth birthday by bringing her on stage during a packed performance

Christina Aguilera cuts a casual figure in baggy trousers as she arrives in Israel for upcoming performances

Pop Stars’ Fitness Secrets: Beyonce, Mariah Carey, Christina Aguilera and More Divas Tell All

Christina Aguilera showcases her curves in designer ensemble for fashionable Instagram post: 'X and the City'