I have been buying Chanel lambskin ballerina flats for over 30 years and they sizes change all the time as they constantly tweak the toe cap!
I generally wear a 39.5 in Chanel ballerinas as I have full inserts in both shoes for the past 25 years. Recently I tried in the new quilted ballerinas in store as they are "quilted"- yes, I have been waiting along time for these babies! I am sad to report that I could not make them fit on my fit and can't endure the pain of hoping they will stretch....So sad... Really heartbroken over it...
The stretching- professional and on my own does work for the lambskin, not tweed or patent...in my view...
It is the real reason we see them on
eBay all the time as the stretching did not work and the cost is too high to let it sit in your closet. It is why I sell mine from time to time...