Jessica Biel Bag

I got the bag in the mail today. I love it, but I think it looks ridiculously huge on me. I am barely 5'4, and I just don't think I can pull it off. I would love to get it in the smaller size. Does anyone know where I might be able to find the medium?
 
I guess that I expected it to be more like a handbag size than an overnight bag size. I should have tried it on in person before I ordered it online, but when I saw that it was selling out everywhere, I wanted to order it before I missed my chance. Maybe I will call the DVF store to see if they are expecting to get any more of the medium size.