Tara and Ambria, with the help of Marie Claire Senior fashion editor Zanna Roberts Rassi, have to determine if a vintage jacket is a real YSL couture piece. Meanwhile, Sex and the City stylist Rebecca Weinberg comes into STA shopping for clothes for supermodel Julie Henderson -- her new client. She's looking for a vintage dress and STA doesn't have a vintage section big enough to meet her needs. But Ambria wants Rebecca so much as a client that she completely ignores this fact and tells Rebecca not to worry -- STA is her go-to for vintage. They will have the dress in a couple of days. Though Ambria is basically totally exaggerating, luckily, Karina has a family friend who runs a vintage showroom. The showroom wows both Ambria and Karina with their couture collection and one of a kind items. One of the dresses fits Julie beautifully and Rebecca is duly impressed. Meanwhile, Tara meets with a wild and crazy costume designer who has some amazing Miu Miu and Proenza shoes.