The `World Is Not Enough` actress - who has two daughters, Lola, six, and seven-year-old, Sam with former husband Charlie Sheen - has named the American tot Eloise Joni after her mother, who died from cancer in 2007.
A representative for Denise said: "Eloise Joni Richards is named after Denise`s mom (Joni) and Denise and her daughters Sami and Lola chose the name Eloise. Denise and Eloise`s big sisters couldn`t be happier and feel incredibly blessed."
The star added on twitter: "Thank you all for your sweet messages. The girls and I are over the moon and so is my dad Grandpa Irv - xo. (sic)"
The actress also changed her profile on the micro-blogging site to read: "Actress, single mom of three adorable daughters, animal lover, some say I`m a good cook, and I`m always up for trying something new."
Ironically, Denise, Charlie and their children were staying in the Eloise suite at New York`s Plaza Hotel last year when panicked porn star Capri Anderson called police after Charlie - who was drunk and had been taking cocaine - began smashing up his room after accusing Capri of stealing his wallet and cell phone.
Denise and the girls were staying in a separate room.