Nicole Richie delivers baby girl in L.A.

Nicole Richie arrives at the 2007 Fashion Rocks Concert at Radio City Music Hall in New York September 6, 2007. Richie and her rock-star boyfriend became the parents of a daughter in Los Angeles on Friday, People magazine reported.

LOS ANGELES (Reuters) - Socialite Nicole Richie and her rock-star boyfriend became the parents of a daughter in Los Angeles on Friday, People magazine reported.

Harlow Winter Kate Madden was born at Cedars-Sinai Medical Center, People said, quoting a spokesman for Richie's manager. It is the first child for Richie, 26, and Joel Madden, 28, the lead singer of pop-punk band Good Charlotte.

Richie, the adopted daughter of singer Lionel Richie, has become a tabloid staple in recent years on account of her party-hopping lifestyle, stick-thin figure, and fractured friendship with Paris Hilton, her co-star in the reality TV series "The Simple Life."

A pregnant Richie spent an hour in a Los Angeles jail in August after being sentenced to four days for driving the wrong way on a Los Angeles freeway while under the influence of drugs. Prison overcrowding in Los Angeles County means nonviolent offenders often spend only a fraction of their sentences behind bars.

(Reporting by Dean Goodman; editing by Mohammad Zargham)