I'm a FTM too but I asked a few friends and they say it is possible to go back to norm, but it takes time and everyone is different.
Good question OP. I wanted to know if I'll fit into my regular bras again.
Based on anecdotal evidence, you will be able to wear your old band size within a year depending on all the usual factors.
PrncesWife:Mine went back to my normal size really quickly (like within 6 weeks I think). It's weird because this time my rib cage didn't expand at all.
Cool! I knew a lot of things shift back into position post-baby but wasn't sure if ribs were included.
Yes, it does. I'm usually a 32dd and with my last pregnancy I ended up in a 36 band. When I got fit for one nursing bra at 37 weeks I was in a 36. Within a month or so that band was waaaay to loose. Don't remember all the details of how long it took after that, maybe a couple months, but I did go back to my pre pregnancy size. So far, the same thing is happening to me again. I'm very short, though, so I really don't have much of a torso and this baby is right in my ribs.
Married my love 6/11/11 | MMC 10/11/11 | Eliza Frances born 9/18/12 | Rhett Garland born 2/24/14