Hmm.. I seem to remember a time when the store would alter it for you. Times has changed, eh..

Good luck! I was going to answer, but then I was afraid you might take my advice and ruin it.
If it were me, I'd just wear the sleeves long because, in my case, most sleeves are already too short.. and the long look is considered stylish now.

I do have to dress up for a model lesson that I'm having videotaped with two other teachers one afternoon next month... but I'm ready.

Sue, living in casual comfort almost all the time