Round these parts, Mandy Kellogg Rye — aka Waiting on Martha — is a sort of celebrity. Every single girl here loves her and her easy, effortless approach to style, design, fashion, the works. She's the kind of girl that we're certain we would be best friends with. Which means that we're also secretly hoping for an invite to her ridiculously chic Halloween Party — set for only the most fabulous of trick or treaters of course. Because you just know that with ideas like this . . . it's going to be good.