Joel Madden calls Paris Hilton his sister in law

Joel Madden has been reportedly referring to Paris Hilton as his “sister in law” at the Coachella Music Festival this weekend.

Paris attended the event with her boyfriend, Joel’s brother and Good Charlotte bandmate Benji Madden and according to the Mirror, Joel introduced her with the label on several occasions.

An onlooker told the newspaper: “He said it in a jokey way, but from the sound of things it’s only a matter of time.”

“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.”

Both Paris and Joel’s fiancee Nicole Richie have dismissed rumours that the socialite was interested in the pair having a double wedding but the source added it might be a race to the altar: “Joel and Nicole always said they would make it legal once their baby was born, but Paris and Benji could get there first.”

When asked about it directly over the weekend, Joel told People magazine: “We’re the family with the baby so I think probably us [first], but who knows?”