Hollywood star Nicole Kidman is planning to marry boyfriend Keith Urban in a winter ceremony in her home city Sydney, Australia. According to gossip in Australia, the pair will tie the knot in a Catholic church in the city on 25 June (06). Kidman's publicist has refused to comment on "speculation on wedding dates" but rumours have circulated since the couple were first linked last year (05). They only confirmed their relationship in February, by arriving at the Grammy Awards holding hands. Kidman has fuelled rumours by showing off a diamond ring on her engagement finger.