Kate Hudson has sparked speculation she is set to wed baseball boyfriend Alex Rodriguez, after she was spotted sporting a dazzling diamond on her ring finger.

The actress has been dating the Yankees ace - nicknamed A-Rod - since last November, and the pair has been almost inseparable ever since.

And the loved-up couple has started rumours they are planning to walk down the aisle, after Hudson was seen with a diamond band on her wedding finger on Monday night, according to the New York Daily News.

Representatives for both stars were unavailable for comment as WENN went to press.