Whether someone in your family is completing high school or college, graduation day is bound to be captured in many photos. Make sure that when you look back you don't think, "Look at all those wrinkles in the graduation gown!"
As soon as you remove the gown from the packaging (and don't wait until you're all ready to go to the ceremony) hang it up on a padded or wooden hanger. Avoid wire hangers that can get caught on the fabric and snag it.
Place the gown into the bathroom for a few days while you're showering. The steam will loosen up some of the tight creases and wrinkles. While this isn't the end all, be all, it will make the next step much easier.
Since most graduation gowns are made of polyester, ironing directly on it can melt the fabric. Turn the gown inside out and place a white towel over the fabric and iron over the towel on the warm setting. Try not to hold the iron in one spot for too long to prevent scorching.
To keep it wrinkle-free until graduation, hang it up where it can't get smashed by other items.
