Stella McCartney 4052“Stella McCartney 4052 fuses two shapes - round and square - and produces an oversized retro appearance made from over 50% of natural and renewable materials.” Franchesca Flack – Sunglasses Shop Fashion Writer.Stella McCartney 4052 frame front reveals squared edges with delicate curved bottom and brow. Stella McCartney sunglasses combine masculine and feminine elements. The temple curls down onto a straight line. Within this is Stella McCartney’s signature logo engraved on a metal plaque. 4052 in contemporary matte grey tortoise is made from over 50% of natural sources. Miranda Kerr, Kate Moss and Rihanna all favour Stella McCartney sunglasses. UV400 lenses. Stella McCartney sunglasses come with a two year warranty.