Hilton and Richie on double date

Paris Hilton and Nicole Richie have been seen on a double date with the Madden brothers.

Joel says that it’s common that the four of them go out together.

The Good Charlotte singer told Us Weekly, “It’s not the first time we have all hung out.”

He added, “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.”