Dungeon Master Forum

I've been considering on putting a timeline in and allowing characters to grow old, so I want to be able to change their portraits but I see no way to swap that out. only solution that I can find is to swap the mirror to an older looking character but what I don't know is if the stats will hold true to the original during the swap. the other method to use was if a character dies, when they are resurrected they are older more zombie looking, in other words skin falling off and weight loss.
has anyone tried dong this?