SOCIALITE Paris Hilton has sparked wedding rumours with her lover Benji Madden, after being introduced as his wife, and the pair exchanged diamond rings with one another's initials.

Paris Hilton is being introduced as lover Benji Madden's wife.

The hotel heiress – who started romancing the Good Charlotte rocker earlier this year – sparked wedding rumours after Benji's brother Joel called her his "sister-in-law" and Benji was spotted wearing a diamond ring bearing the initials PH.

Paris Hilton’s mom, Kathy, is returning to acting. Kathy is set to appear in an upcoming episode of the soap opera “The Young and the Restless” as herself.

The maternal Hilton’s character on the CBS drama will find a magazine cover model for Peter Bergman’s character Jack Abbott. However, his wife Phyllis (played by Michelle Stafford) didn’t take it lightly when Jack permits Hilton to take over the photo shoot.

Hilton taped the episode on Wednesday. Its screening date schedule is yet to be announced. Paris and Nicky’s mom isn’t new to acting. She had a small part in the sci-fi horror, “The Dark,” in 1979. Her TV credits include guest appearances in “Bewitched,” “Family Affair,” and “Happy Days.”

More than 85,000 people have applied to become Paris Hilton's new "best friend forever" in a reality TV search.

The socialite said she was looking for "someone who cares about me" and who is "not going to screw me over".

Would-be companions must post videos on the website for the MTV show Paris Hilton's My New BFF, with 20 finalists to be chosen by an online vote.

They will then move into a house with Hilton, learning "normal girl stuff" like fashion and shopping.

The 27-year-old heiress, who found fame on the reality show The Simple Life, told the Associated Press news agency she was currently working on the challenges to set the contestants.

She said she was looking for "someone who's fun, someone who I can trust and someone to get along with that is not going to screw me over. Just someone to have a great time with".

She says, "She's a nice girl and a lot brighter than people give her credit (for) but no one sees her like that because she plays this character all the time. She's actually a marketing genius."

One thing's for sure is that Paris is a marketing genius. She has definitely made herself into a worldwide brand just by acting like the way she does.

The hotel heiress arrived at Mahiki, in Mayfair, with her Good Charlotte rocker boyfriend Benji Madden at 1.20 a.m. on Tuesday, April 15.

Paris – who promised 'Mahiki Madness' on the invitations to her special evening – performed a steamy dance for Benji before the pair left at around 3 a.m.

A source said: "Paris and Benji were all over each other and, at one point, she gave him an impromptu lap dance. Everyone was staring, which only seemed to spur Paris on."

The club paid tribute to Paris by making her a special version of their $200 Treasure Chest cocktail, a potent mixture of champagne and spirits. The drink – which was kept on ice until she arrived – was decorated with flowers and had her name stamped on the side.

Before she left, Paris took to the dance floor and gyrated to her single 'Stars Are Blind'.