Nicole Richie gives birth to boy

Son is second child with Joel Madden

Nicole Richie and Joel Madden are parents of a newborn baby boy.

Richie says on her Web site that Sparrow James Midnight Madden was born early Wednesday. Sparrow, who weighed 7 pounds, 14 ounces, is the second child for Richie and Madden. Their daughter, Harlow, will be 2 in January.

Richie, 27, became a clothing and accessories designer after starring with Paris Hilton on "The Simple Life." Madden, 30, fronts the band Good Charlotte and runs the DCMA Collective clothing line with his twin brother, Benji.