Paris Hilton and her sister Nicky stepped out in Malibu on Monday afternoon, and we're not sure if the ladies planned on color coordinating their outfits, but we totally love it!

Paris went with a super low-cut maxi dress with an appropriate "Malibu" necklace, while Nicky wore a short floral number, and the ladies had a blast indulging in a little retail therapy. Paris spent the Fourth of July weekend partying at her pad in the 'Bu, but it's not just about hitting the town and tanning! And after she was done getting her shop on, P slipped into a sexy pink bikini and hit the beach -- with a boogie board!

And lucky for us, she posted the pic below:

Now that's hot!