Christina Aguilera's new baby: Max Liron Bratman

Christina Aguilera has given birth to a bouncing baby boy - Max Liron Bratman.

Within 24 hours of fellow Hollywood A-lister Nicole Richie popping out a baby girl, the singer and her beau Jordan Bratman also welcomed their new bundle of joy.

The 6lbs 2oz tot - the couple's first baby - arrived on Saturday night and his mum is said to be coping brilliantly.

"He is a beautiful, healthy baby boy!" the couple's representative told one US magazine. "Mum is resting and doing well!"

Both Aguilera and Richie were on the same ward at Cedars Sinai Medical Centre, Los Angeles, where they reportedly got five star treatment.

Reality TV star Richie, 26, and rock star partner Joel Madden greeted the Friday arrival of their daughter - Harlow Winter Kate - with joy and thanks.

"We are very blessed she's healthy and beautiful and so good already," Madden told one US magazine. "We are very happy."

Congratulations started flowing within minutes of the couple welcoming the 6lb 7oz tot. They've now left the hospital. "It's just amazing. I'm so excited," Richie's friend, Lauren Conrad, of US TV show The Hills said. "I want to see the baby! I bet it's beautiful."

Though Simple Life star Richie has said they initially couldn't agree on a name, they settled on Harlow - the last name of famous 1930s screen siren Jean Harlow.

"There's a huge trend, especially among young Hollywood, to honor Classic Hollywood with names," Pam Satran, co-author of The Baby Name Bible.

"Harlow is the coolest glamour girl name."

She also cited actress Reese Withersoon and Ryan Phillippe and Jason Priestley and Naomi Lowde naming their daughters Ava (Ava Gardner); actor Greg Kinnear and wife Helen Labdon naming their daughter Audrey (Audrey Hepburn) and Weeds' comedian Kevin Nealon and wife Susan Yeagley naming their son Gable (Clark Gable).