I actually emailed Geller some time ago asking exactly that and surprisingly, the man himself responded to me! He said he would send me one for free, but in return he wanted a photo of the jacket that needed it (after I had told him I was searching for said jacket and finally got it, he was curious which of his pieces I was fiending for)
My mistake: I took this rare opportunity to send him a pic of all my Geller jackets as well and started to gush over how much I loved his work. I had activated fanboy mode. I think I creeped him out, because he stopped responding to me. Months later I followed up because I was heading to NYC (he had originally asked if I could pick it up from [presumably] his studio) but no dice.
WE COULD HAVE BEEN FRIENDS, ROBBIE. YOU AND I COULD HAVE BEEN TOGETHER
TLDR; go ahead and email, but act aloof and pretend you don't give a shit about him