Sienna Miller has reportedly been wearing a platinum engagement ring originally given to her by Jude Law when they were together the first time round.

In Life & Style magazine, a friend has said that she has been wearing the platinum and diamond ring in private, although it is not clear whether this means a wedding is on the cards for the reconciled couple.

According to JewelryNews, the ring is worth £37,000, and was given to Sienna in 2004.

Sienna has starred in films such as 'Layer Cake', alongside Daniel Craig, and 'Factory Girl', with Guy Pearce.

Later this year, she is set to appear in 'Hippie Hippie Shake', a comedy set in 1960s Britian, with also features Cillian Murphy and Derek Jacobi.

After splitting up in 2005, the couple have recently got back together and they spent Christmas with each other in Barbados.