Aguilera books in for baby - report

The countdown is on for Christina Aguilera's baby - she has a delivery date of January 10, according to US reports.

The 'Beautiful' singer, who turned 27 on Tuesday, has her caesarean section scheduled, according to the New York Post newspaper.

Meanwhile, a source tells the publication that the singer and her husband Jordan Bratman are toying with the names Jackson Jake and Max.