For years I’ve been aware of vanity sizing and difference in clothes sizing between shops. I’m a 12 in the shops with very roomy designs (m+s, supermarkets, matalan) and a 16 in designer type shops (although, admittedly they don’t often go that big). But I’ve only just twigged that bra sizes in shops differ. Total PITA, why can’t there be standard sizing? Tesco and ASDA changing rooms are both still closed so am now having to return bras that are too big/small. I’ve only just realised this as I’ve always been a M+S girl, trying to tighten my belt now and shop in supermarkets.