(Cover) - EN Showbiz - Paris Hilton has already picked her wedding dress even though she's not engaged.

The hotel heiress is currently romancing nightclub manager Cy Waits, who she's been with for around a year. There has been constant speculation the pair will tie the knot, but Cy is yet to pop the question.

Although she isn't officially betrothed, Paris still enjoys dreaming about her big day. She loves romance and enjoyed watching Britain's Prince William marry Catherine Middleton last month, which got her thinking about what she'll wear on her special day.

"I loved her gown," Paris explained. "I thought it was perfect for her and she looked beautiful, but I have already thought about what I would want my gown to look like and it is very different."

Paris and Cy are blissfully happy and she admits she would love for him to propose. She's trying not to become too obsessed by the idea though, especially as she wants the moment to be a surprise.

"Cy is so amazing and makes me feel like the luckiest girl in the world, so I look forward to that day one day," she added.

Although the couple get on well, they still go through hard times. Paris was seen lamenting their rocky relationship in a preview clip for her new reality television show The World According to Paris which was released earlier this month.

"I don't know why relationships have to be so hard. We've been together a long time, so I'm just trying to decide what to do... One minute we're fine and the next minute we're a total mess," she said. (C) Cover Media