Denise Richards with her daughters Sam and Lola
06/30/2011 at 08:30 AM EDT
Denise Richards is a new mom – again!
The actress, 40, just adopted a baby girl domestically, her rep tells PEOPLE.
"Eloise Joni Richards is named after Denise's mom (Joni), and Denise and her daughters Sami and Lola chose the name Eloise," the rep says. "Denise and Eloise's big sisters couldn't be happier and feel incredibly blessed."
Shortly after the news broke, Richards posted a message of appreciation to her fans on Twitter. "Thank you all for your sweet messages," she Tweeted
. "The girls and I are over the moon and so is my dad Grandpa Irv...xo"
Richards had her first two children
Charlie Sheen. Lola is 6, and Sam is 7.