Luxottica Group S.p.A. is the world's largest eyewear company. Its best known brands include Ray-Ban, Persol and Oakley, Inc.. It also makes sunglasses and prescription frames for a multitude of designer brands such as Chanel and Prada, whose designs and trademarks are used under license. Luxottica also makes sunglasses branded Burberry, Polo Ralph Lauren, Stella McCartney, Tiffany, Versace, Vogue, Miu Miu, Tory Burch and Donna Karan. Its prime competitor is the Safilo Group S.p.A.