Nicole Richie and Joel Madden have taken to Twitter to gush about their newborn son Sparrow.
"What a great day to come back on Twitter," Richie, 27, writes. "Thank you everyone for your well wishes. I love my family!!"
Madden, 30, is equally excited.
"1st day of his life & my son is already a trending topic on twitter," he Twitters. "That's right son, ur just like your old man."
Sparrow James Midnight Madden - who weighed 7 lbs. 14 oz. - was born in the middle of the night early Wednesday morning. The boy joins older sister Harlow Winter Kate Madden, who was born in January 2008.
After giving birth, Richie wrote on her website: "Nicole, Joel, Harlow and Sparrow are all doing well. Thank you for all of your good wishes."