Charlie Sheen is engaged to adult film star Brett Rossi, according to a U.S report.

Editors at report the Anger Management star asked Rossi to marry him on Saturday (15Feb14) during a vacation in Hawaii.

Pictures have also emerged online showing the couple smiling and holding hands, with Rossi sporting a large diamond ring on her wedding finger.

Sheen hinted at the news in a post on his account, writing "In a moment of Kray-zee (crazy) gratitude; I got my gal (girl)!! 4evurr (forever)!"

Sheen has been married three times before - first in 1995 to model Donna Peele, whom he split from a year later (96), to Bond girl Denise Richards in 2002, with whom he has two children, and to Brooke Mueller in 2008, who is the mother of Sheen's twin sons.

Mueller and Sheen split in 2011.