Nicole Richie gives birth to baby boy

Nicole Richie has given birth to a baby boy.

The Simple Life star, who checked into a Los Angeles area hospital on Monday, gave birth early this morning, according to an announcement on her website.

"In the middle of night, the very early hours of September 9, 2009, Sparrow James Midnight Madden was born to Nicole Richie and Joel Madden," it read.

"He weighs 7lbs 14oz. Nicole, Joel, Harlow and Sparrow are all doing well. Thank you for all of your good wishes."

Richie and partner Madden are already parents to 19-month-old daughter Harlow.

The actress recently said that she would love to get married to the Good Charlotte rocker.