Ifans buys Miller a ring for her birthday

Rhys Ifans has surprised Sienna Miller with a ring for her 26th birthday, sparking speculation that he may be planning to propose.

The actor bought a variety of gifts to mark his girlfriend's big day, as well as writing her a love poem in Welsh.

A friend told The Sun: "He’s collected ten presents for Sienna of varying shapes, sizes and prices, all part of his plan for a romantic night in with a mountain of presents."

He added: "Sienna is having a bit of an age crisis, feeling that she hasn’t done enough with her life.

"So Rhys, whose philosophy is to live and enjoy every day, has penned a poem about their brilliant future together, all her achievements in life so far and always seizing the moment.

"He is keeping tight-lipped on a proposal but hinted to me that he has had a Welsh designer craft a special ring for her... which can only mean one thing."

It was reported last month that Ifans had proposed with another poem.