Sienna on holiday with new man Getty

Sienna Miller has travelled to Italy for a romantic holiday with her new boyfriend Balthazar Getty.

The pair have been spending time together on the Amalfi Coast this week after deciding to go public with their controversial relationship.

A source close to Miller told The Mirror: "Sienna is totally besotted with Balthazar. Their relationship has gone from strength to strength over the past month and Sienna finds him utterly irresistible. Balthazar arranged for the trip to one of the most beautiful and exclusive parts of the Med.

"Sienna is so relaxed in his company and has been telling her inner circle she's never been so in love. It's early days - but she looks completely smitten."

The actress was first linked to billionaire oil heir Balthazar at the end of last month, but Getty was quick to deny rumours of an affair.

Getty's wife Rosetta is said to be devastated by their romance and is now consulting divorce lawyers. The estranged couple have four children together.