Singer Jessica Simpson has been discharged from hospital after giving birth to her second child.

The pop star was released from Los Angeles' Cedars-Sinai Hospital on Wednesday (10Jul13) - her 33rd birthday - and she returned home to celebrate her special day with family and close friends.

She has been resting at the medical centre since undergoing a scheduled Caesarean section to deliver her son, Ace Knute, on 30 June (13).

Simpson and her fiance Eric Johnson are also parents to a 14-month-old daughter, Maxwell Drew.