MARY, MARY: Despite Ginger’s mile-high hair and well-placed beauty mark, it’s Mary Ann most guys fantasize about sharing a deserted island with. Why? She’s sweet but sassy, low maintenance and always game for a good time. She’d love this little blue dress by Betsey Johnson, we’re thinking, and that’s why we love it too. Pretty in silk/spandex houndstooth, it stops just short of “cute” by way of a micro-mini length skirt. Add a pair of booties, your Professor and a boat of questionable seaworthiness and you’re in for an adventure. GET IT: On sale for $229.60 (originally $298); shop online at BetseyJohnson.com.