London: `24` star Keifer Sutherland is reportedly engaged to longtime girlfriend Siobhan Bonnouvrier who has been photographed wearing a diamond engagement ring.
The couple are holidaying together in Italy and were photographed holding hands while strolling in the town of Portofino, reported a news website.
The 43-year-old actor has two failed marriages behind him and was famously jilted by Julia Roberts who dumped him just days before their planned wedding in 1991.
Siobhan, a style director for Allure magazine, was wearing a grey top and skirt, while Kiefer sported a black shirt and trousers as they strolled around town after dinner.
Sutherland`s first marriage to Camelia Kath, with whom he has a 22-year-old daughter, ended in 1990, while his divorce from Kelly Winn was finalised two years ago.
The actor is currently in the midst of shooting new film `Melancholia` with controversial director Lars von Trier.
The "psychological disaster movie" sees Sutherland star alongside Kirsten Dunst, Charlotte Gainsbourg and Stellan Skarsgard.