Hi, I have narrow down my next bag will be my first DE bag - Siena, but couldn't decided on PM or MM, I read all the post in here, some people said the MM will bending in on the two top corner while you wearing cross body, which is my favorite style, I know the PM will look cute and without that problem, but I'm afraid it will be too small. What will you pick? I'm 5'4, size 4-6, thanks! I would like to get it in this weekend, if I can decided on the size! [emoji3]