Sienna Miller in Venice

The 23-year-old stars with Australian star Heath Ledger, 26, who plays a serial womanizer.

Miller found herself in the tabloid spotlight after her ex-fiance Jude Law admitted an affair with his nanny BBC reports

"I've met a few Casanovas that I've liked, and a few that I haven't - and I hope to meet some more," she said.

Sienna laughed when she was asked whether she had given any tips to Heath for his role as the famous lover, saying: "No I didn't to be honest. He has enough ability to play the seducer naturally to need any tips from me."

In director Lasse Hallstrom's film, Ledger's Casanova falls for a woman who spurns him, played by Miller, whose last role was in 1960s remake Alfie.

The real Casanova, who boasted relationships with more than 100 women in his memoirs, was the son of actors and rubbed shoulders with luminaries such as Russia's Catherine the Great and French philosopher Voltaire.