The shower, the first of three planned for the expectant mom, according to a source, was an intimate gathering of close friends and family.
Though the singer has not confirmed the gender of her baby, there was a distinctive theme to the gifts – the color blue.
Among the presents bought from baby boutique Bel Bambini, where the singer set up her registry last month, were a blue Loved Mom Guitar shirt, a Cariboo bassinet with blue dot bedding, Trumpette Johnny's socks – and Sozo Whiz Kid wee block, meant for use when changing a baby boy's diapers.
Aguilera, 26, formally confirmed her pregnancy to Glamour magazine earlier this month, saying she will "enter into mommyhood" next year.
This will be the first child for Aguilera and her husband, music executive Jordan Bratman. The two were married in November 2005.