The 40-year-old actress, who rose to fame in "Starship Troopers" and "Wild Things," adopted a baby girl. Her rep confirmed the news to Us Weekly.
The girl's name -- Eloise Joni -- has special meaning. Richards' older daughters Sam, 7 and Lola, 6 picked the baby's first name Eloise. Joni was the name of Richards' mom, who passed away in 2007 from cancer.
"Denise and Eloise's big sisters couldn't be happier and feel incredibly blessed," the actress' rep told Us.
Sam and Lola's father is Richards' ex-husband Charlie Sheen. The couple filed for divorce in 2006 after a tumultuous relationship.