Gwyneth Paltrow is moving into retail with her just-launched GOOP Shop, and the first collaborative item to be put up for sale is a doozy: a $90 T-shirt. Dubbed "The goop tee," the astronomically priced piece of apparel is simply a cotton crewneck tee with side seams and grosgrain piping on the shoulders. "We've collaborated with Kain Label, creators of the perfect tee, to create a version exclusive to goop, inspired ...