Nicole Richie, Joel Madden show off baby

Nicole Richie and Joel Madden became parents to their first son, Sparrow, six weeks ago.
Six weeks after welcoming their first son, Nicole Richie and Joel Madden — along with their 21-month-old daughter Harlow — are showing off the latest addition to their family, Sparrow James Midnight Madden.

“I couldn’t be happier,” Richie told PEOPLE. “The only thing you want is for your kids to be healthy and happy, and they are. I’m right where I belong.” In an interview at their home in Laurel Canyon in Los Angeles, Richie, 28, and Madden, 30, her boyfriend and front man of the band Good Charlotte, said they are deprived of sleep, but grateful their daughter Harlow is now fawning over a baby brother. Tweet, Tweet: A clue to how Sparrow got his name “I’m glad I had a girl before I had a boy,” said Richie. “She just loves him so much.” Adds the children’s proud papa, “She’s very gentle with him.” Lionel Richie: ‘Sparrow looks just like Harlow’ For much more on Richie and Madden’s expanding family — including the decision to name their baby boy Sparrow, how Richie’s second pregnancy was different from her first, and how she’s losing her baby weight — pick up the latest issue of PEOPLE, on newsstands Friday.