According to the US Post office, the 2006 Commemorative Stamp Program will feature a Judy Garland stamp. From the website:
In June, Judy Garland becomes the 12th honoree in the Legends of Hollywood series. In 1940, Garland won a special Academy Award "for her outstanding performance as a screen juvenile" for her performances in the 1939 films Babes in Arms and The Wizard of Oz. "Over the Rainbow" is one of the many classic songs she introduced to her audience. The "Judy Garland" stamp image is based on a publicity photo from A Star is Born, and the side of the stamp sheet depicts her as Dorothy in The Wizard of Oz.Further down the page is a full section devoted to Judy and an image of the stamp itself.