GOT MILK Vintage New Promo Poster Hanson 1997 Full Size. Full size GOT MILK Poster from 1997 National Fluid Milk Processor Promotion Board ad campaign. This is the musical group "The Hanson Brothers" with milk mustaches. Poster is full size and measures 23"x30" and in pristine condition. Has been stored flat since 1997 and will be shipped rolled in mailing tube.