Pregnant pop star Christina Aguilera proved her nesting instincts are in full flight during a shopping trip in LA over the weekend.

Joined by her husband Jordan Bratman, the singer trawled through exclusive West Hollywood boutique Bel Bambini selecting items for a baby registry, including nappy bags, bottles and clothing.

Baby on board: Christina selected items for a baby registry during a shopping trip in LA

Parents in waiting: Christina with her husband Jordan Bratman

Store employee Crysta Smith told People magazine: "She looked beautiful. She had a little bump. She said she was so excited [to have a baby]."

The radiant 26-year-old, who is yet to officially confirm her pregnancy, kept it casual in a skirt and t-shirt, which hugged her blooming stomach.