Chanel Ballet Flats Patent Black Lamb Skin 39.5

Like new. Wore a handful of times. Authentic. Purchased from Bloomingdales in New York. Comes with original box and dust bags. Had the cobbler put a protective sole and a heel tip to prevent damage and preserve the life of the shoe which cost me $150 - plz Know your Chanel ballet flat sizing. I’m close to a size 9 now post pregnancy and they are tight and I used to be a 8.5.