This is what I wore to UP White Shirt Day (and if there was an event or forum that day, I don't know about it cause of my class schedule).
I love the idea of a dress worn as a skirt especially on cold days wherein your shirt doubles as a cover up to keep you warm. I used an A-Line (or so I think) cut dress for this combo which I think was an aspect that made the whole thing work since it just basically looked like a skater skirt. This combination works for body con dresses too (and I guarantee it since I've done it before, in my old blog). I just played around the blue and white colors of my skirt and paired it with a brown belt and bag to break the monochrome look.
Disney shirt | Forever 21 dress | GH Bass and Co. oxfords | From US bag