Samantha Cameron gives birth to baby girl

Britain's Prime Minister David Cameron speaks to media after his wife gave birth to a baby girl at the Royal Cornwall hospital in Truro, southwestern England August 24, 2010. Samantha Cameron gave birth on Tuesday to the couple's fourth child, a baby girl, while on a family holiday in the southwest of England, making David Cameron only the second British premier to have a child while in office in more than 160 years.(Source: huanqiu.com)

Britain's Prime Minister David Cameron, and his wife Samantha, pose for a photograph on the coastal path at Daymer Bay in Cornwall, August 22, 2010, just two days before Samantha Cameron gave birth to the couple's fourth child, a baby girl. (Xinhua/Reuters Photo)

Britain's Prime Minister David Cameron, and his wife Samantha, pose for a photograph on the coastal path at Daymer Bay in Cornwall, August 22, 2010, just two days before Samantha Cameron gave birth to the couple's fourth child, a baby girl. (Xinhua/Reuters Photo)

Britain's Prime Minister David Cameron and his wife Samantha pose on August 22 on the coastal path at Daymer Bay beach in Cornwall where the family were on holiday.(Xinhua/Reuters Photo)

Britain's Prime Minister David Cameron speaks to media after his wife gave birth to a baby girl at the Royal Cornwall hospital in Truro, southwestern England August 24, 2010. Samantha Cameron gave birth on Tuesday to the couple's fourth child, a baby girl, while on a family holiday in the southwest of England, making David Cameron only the second British premier to have a child while in office in more than 160 years.

(Agencies)