Jessica Alba gave birth to a baby girl at the weekend, according to reports.

The Sin City actress and producer husband Cash Warren's first child was born yesterday at LA's Cedars Sinai Medical Center, according to Us Weekly.

The pair, who met in 2004 on the set of blockbuster The Fantastic Four, recently bought a $4 million property in preparation for starting a family.

The baby's weight and name has yet to be revealed.