Hi, first time poster! I recently became a Mum, and of course with that sizes change. Pre pregnancy I was 12C, now 3 months PP the ABTF calculator says I'm 14D. I'm currently not breastfeeding nor pumping. So, I ordered some bras and they came in. They do not fit, or well at least one side over hangs and the gore digs in a little but not too much for it to be uncomfortable (nonetheless, still ended up crying). I used another calculator as well with the same measurements and came up as US/UK40b which is roughly AU18B

The measurements I gave ABTF are

Loose underbust: 90cm Snug underbust: 88 Tight underbust: 91 Standing bust: 104 Leaning bust: 101 Lying bust: 104

Any suggestions are welcome