Here are some dresses from H&M (It's hard to tell if they are pure white or not, but at least its worth a try to look in the store.) Might need a shrug/sweater with them as well...
http://www.hm.com/us/product/31520?article=31520-A
http://www.hm.com/us/product/29733?article=29733-D
http://www.hm.com/us/product/29835?article=29835-A
http://www.hm.com/us/product/28770?article=28770-A
I don't miss these days! It's better to look now than to look in the dead of February!
