Us Weekly has affiliate partnerships. We receive compensation when you click on a link and make a purchase. Learn more! If there’s one fashion girl staple that seems like a worthy investment, it’s a red sweater. The piece was a mainstay on our social media feeds throughout the winter (long after the holidays were over!), and while we recently wondered whether it was too late to shop one, Tina Fey proved the style works for summer, too. In early June, the comedian, writer and producer popped up at the Tribeca Film Festival wearing a fiery polo sweater, turning the piece into…