I've been a size 4UK since I started dancing last fall. I bought my first pair of shoes back in October. Then suddenly around the end of May, I started feeling toe pains everytime I come back from dancing. I have a few pairs of size 4 from different makers and they all used to fit me, now they all seem to be too tight... 1. Do feet increase in size in the summer and shrink in the winter? Shall I get larger shoes for the summer and keep my regular shoes for the winter? or 2. Does ballroom make your feet larger over time?