Isaac Mizrahi Brand Is All About Quality and Style! Every attention to detail attended to in the production of these tuxedo shirts. Give him the touch of sophistication with this Excellent quality 100% Cotton, long sleeve boy's formal tuxedo shirt by Isaac Mizrahi. Our stylish boy's tuxedo shirts range from sizes 2-20. These shirts are perfect to wear with boy's dress pants or with full boy's dress suits, they are appropriate for all Special Occasions like Weddings, Communions, Graduations, Proms, Holiday Parties, Birthday Parties, Ring bearer boy, and all formal events.