(Cover) - EN Showbiz - Jude Law surprised Sienna Miller with a grand piano at Christmas, and left her thrilled by hiding a diamond ring inside.

The Hollywood stars rekindled their romance in October 2009, and have been virtually inseparable ever since. They were previously engaged, but their relationship ended when Jude admitted to sleeping with his childrens nanny in 2005.

Since they got back together there have been rumours they are planning to wed, which have gone into overdrive after it was revealed Jude gifted Sienna with a sapphire and diamond band over the festive season. The ring is believed to have cost 130,000.

She wept after opening up the piano lid and discovering a wooden box made from the same wood as the piano containing a diamond and sapphire ring, a source told British newspaper The Daily Mirror.

It is now thought the couple will tie the knot next year, with Jude said to be keen to have the wedding soon. The pairs friends are all preparing for the event already, although there has been no confirmation they are engaged.

Jude would love to make Sienna his wife before next year is out. Family and close friends are expecting a save-the-date card any time soon, another source explained. (C) Cover Media