Hilton, Madden 'planning marriage'

Paris Hilton and Benji Madden have reportedly begun preparing to get married.

The Good Charlotte guitarist was spotted wearing a ring bearing the initials 'PH' over the weekend, according to The Mirror.

During his band's performance at the Coachella Festival, his brother Joel introduced Hilton as his "sister-in-law".

A source said: "Paris and Benji are inseparable - it's quite nauseating in some ways.

"A lot of people have brushed it off as a publicity stunt but Benji is serious about Paris and he has discussed marriage plans with his brother - which is why Joel called her his sister-in-law."

Hilton reportedly took her sister Nicky along to the music bash to help bring her family closer to Madden.