Paris and Nicky Hilton went shopping at Planet Blue with their boyfriends

They're not the most similar sisters, but Paris and Nicky Hilton definitely have their finer moments. And yesterday they were spotted out together with their respective beaus.

The "Stars are Blind" singer was arm-in-arm with her Good Charlotte rocker boyfriend as they joined Nicky and longtime boyfriend David Katzenberg for a shopping outing at Planet Blue, as well as other shops in Malibu, California.

Perhaps they were finding some new duds for Paris and Benji to take with them on the Good Charlotte tour that they're leaving for next week.

The "Simple Life" hottie told press, "We're actually leaving in a couple days for South Africa, so I'll be with him." As for life on a tour bus, she commented, "I'm just happy to be together, so no matter where we are, we'll have a great time."

Fropki.com

Enjoy the pictures of the Hilton sisters out with their men on Sunday (March 16).