Celebrity fashion lines do not always work (Malibu Dave by David Hasselhoff), but sometimes they do (The Row, Elizabeth and James, Olsenboye, and now BeachMint by Mary-Kate and Ashley Olson). I place Nicole Richie in the latter category (ahhhh - sweet redemption from The Simple Life!). Her House of Harlow 1960 line, especially the jewelry, is fresh and edgy and inexpensive. Take the Sound Waves Cuff pictured above. I love that she creates interest with the shape while also keeping on trend by using rose gold and, perfect for Halloween, black diamonds! Pair with this black dress and these sexy shoes and you'll look so good no one will realize you didn't don a costume this year.