Jessica Simpson seems to enjoy doing her planning in pairs. She and sister Ashlee Simpson are both in the thick of wedding planning—and of course they’re totally in it together! A source exclusively tells E! News, “Jessica and Ashlee are very close and really supportive with each other, especially since both weddings are coming up.” Our source says, Jessica, who will be tying the knot with fiancé Eric Johnson over the July 4 weekend, is planning a “classic and modern” wedding, while Ashlee is shooting for more of a “Bohemian-style vibe” when she swaps vows with Evan Ross on Aug. 31. Each plan sounds totally in keeping with the personalities of the brides-to-be, both of whom will be tying the knot for the second time.