I’m 6 days PO and I had 525s in too. I was 34DD preop and now I’m about a 36(due to incisions)F but that is likely to change over the next few weeks. It could be anything as everyone is different darl, it depends on your breast tissue and your BWD too.
My advise is maybe just get the Macom bra and then go to asda etc when you have had them done and feeling up to going out so you can try them on. You might even be strapped up for the first 4 days so you won’t need the bras anyway. That’s what I’ve done anyway xx