Paris Hilton was seen out wearing a large ring on her left ring finger with the initials “BM,” which was thought to be for her new boyfriend, Benji Madden. There is of course speculation that she’s engaged.

The following night, the heiress, 27, helped the Good Charlotte guitarist celebrate his 29th birthday at LAX nightclub, where she surprised him with a cake.

Paris Hilton and Benji Madden made their relationship public on February 21, smooching at Hollywood hot spot Villa.

Will their relationship last?

Paris Hilton and Benji Madden were spotted shopping together

Will someday both Paris Hilton and Nicole Richie marry their respective Madden’s and make a new season of The Simple Life with Madden’s? Who knows?

Benji Madden and former fiancee Sophia Monk

One thing puzzling is why would Benji Madden dump Sophie Monk for Paris Hilton?

In a twist on “the blonde leading the blonde”, Monk once parodied Hilton in her big screen breakthrough flick, Date Movie, playing up the super spruiker’s raunchy advert for a burger chain in 2005.

But Hilton can now have the last laugh as she’s now got her teeth into Monk’s former man.