Hi Mummy ikr its so frustrating.. All my four kiddos i have tried all. Its either too tight, or doesnt fit, or the bust will just pop up. I try and error so many times until i finally found the bra i like and i bought it at aliexpress and also qoo10. But i prefer more to those sports bra without the strap cause its easier to bf. You have to try to find the ones that fits.
It's best to buy where you can try on first. I always like uniqlo's bras they are comfortable and good size. Even though they are not nursing bra it's still OK, I prefer normal bras as most nursing bras I have are really terrible (the padding keeps coming off). When I nurse I just pull it down and nurse.
Most departmental stores maternity section offers quality nursing bra. Best to visit and try it on.?
You can try Kaylene plus size boutique. They sell plus size nursing bra too!
I bought from marks and Spencer. Can try first before buying.
Bove