Brooke Shields has given birth to a second daughter called Grier Hammond.
The 40-year-old and her husband, screenwriter and producer Chris Henchy, already have a two-year-old daughter.
The actress suffered from post-natal depression after her first birth and was treated with anti-depressants.
Meanwhile, singer Melissa Etheridge and her partner Tammy Michaels have announced they are expecting twins.
Tammy will give birth to the children and sperm from an anonymous donor was used in the pregnancy.
Melissa Ethridge suffered from breast cancer in 2004, but was later declared to be in remission.
She already has two children from a previous relationship, fathered with sperm donations from rock star David Crosby.