Guests at Calvin Klein’s spring 2013 runway show today will be able to get a closer look at the 8 1/2-carat engagement ring Amar’e Stoudemire bought for his fiancée, Alexis Welch. The romantic pair will sit in the front row for the presentation at the company’s European headquarters in Milan. The fashionable Stoudemire proposed to Welch — the mother of his three children — in early June in Paris and presented her with a ring he designed with Los Angeles-based jeweler Shayan Afshar. New York Giants star Victor Cruz, who wore a Calvin Klein tuxedo to the Met Ball this year, will also sit front row at the Milan show with his girlfriend, Elaina Watley, and Henrik Lundqvist.