Nicole Richie and Joel Madden have welcomed a baby girl, her rep tells Usmagazine.com.  Harlow Winter Kate Madden was born Friday at Cedars-Sinai Medical Center in L.A.

She weighed 6 lbs., 7 oz.  A pal was spotted walking into her room with a giant bundle of pink and white balloons, flowers and a stuffed black and white horse.

As Usmagazine.com reported exclusively, she arrived at the hospital late Thursday. Her parents arrived Friday as she went into labor. Madden’s brother Benji and his girlfriend Sophie Monk were also at the hospital.

In November, Richie said they could not agree on a baby name. “I figure I’ll be in the hospital for at least a day, so I’ll figure it out then,” she told Access Hollywood. In the same interview, Richie indicated the couple would wed “eventually.”

Earlier that month, Richie celebrated her pregnancy with a Wizard of Oz-themed baby shower, attended by Lauren Conrad, among other guests.

Richie and Madden have been actively supporting families and children in need since they launched the Richie-Madden Foundation in December. They threw a “winter wonderland” party for more than 200 children and their families.”