G.M.
Take the shirt and have a rubber stamp made of the footprints. To do this you will need to photo copy the shirt. Then take the paper with the footprints somplace (such as office depot or Lobue's rubber stamp company) and have the them made into a rubber stamp. It may be that the shirt will not stay forever but you will have a nice set of your baby's feet to use in memory books or on baby shower gift cards, etc.