Let's see your vintage baseball caps

[JollyElm]

I use what my girlfriend calls 'the device' to stretch out hats. Use a round 5 or 10 lb. weight. Wetting the hat makes it more pliable, but you can do it dry. Put the back part of the hat (where the label generally is) on a door knob, but NOT the way you would usually drape something over a door knob. Make sure just the extreme edge of the hat 'band' (not the insides) is balancing on/touching the door knob, so the right part gets stretched out. Now put the weight inside the hat, using the roundness to match the round inside band of the hat. You have to balance it to get it in just the right position. From there, simply give it a couple of days and that hat band gets stuh-retched!!