The GRUPPO MATTEI showroom on Madison Avenue is hosting a sample sale today and Monday at its airy, light-filled space. The showroom carries Italian made shirts from labels such as Guglielminotti, Le Sarte Pettegole, Caliban, and Tintoria Mattei 954. The shirts are classic (with a twist), well tailored and made of  gorgeous fabrics. The Mister stopped into the show[...]