Despite the freezing temperatures, the fashion world is already thinking much warmer thoughts with the release of several new spring campaigns. Prada unveiled an ad shot by Steven Meisel featuring a large cast of new faces dressed in brightly colored, mural-inspired clothing. Celebrities made a big showing this season with Rihanna for Balmain, Lady Gaga for Versace, and Erykah Badu for Givenchy. And for his final Louis Vuitton campaign, Marc Jacobs featured his favorite muses including Sofia Coppola, Edie Campbell, and Gisele Bündchen. Check out these spring ads and many more in our slideshow.