Socialites attend Joel and Benji Madden's DCMA clothing launch

Paris Hilton and Nicole Richie have been snapped on a double date with twin boyfriends Benji and Joel Madden.

The pals attended the LA opening of the Good Charlotte brothers’ DCMA Collective clothing store on Friday.

And Joel – who’s the father of Nicole’s baby daughter Harlow – says they regularly spend time as a foursome.

‘It’s not the first time we have all hung out,’ he tells Us Weekly.

‘We have obviously known Paris for a long time, and [Nicole and Paris] have known each other for a long time, so it’s nothing new.’

Paris, 27, was first seen with Benji, 29, last month, and they have made no secret of their blossoming relationship.

Last week they were spotted wearing rings with each other’s initials on them.

SEE VIDEO of Paris Hilton and boyfriend Benji Madden leaving DCMA Clothes store in LA…

Paris Hilton at the DCMA Clothing launchNicole Richie at the DCMA Clothing launch

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Alison Adey