Ive got big boobs and it makes it hard considering all the baby feeding singlets are made for smaller cup/bust sized women.
i have a friend who is larger busted than me, and both of us have bought the "Almost Mum" breastfeeding tops to feed in. ($30 each) You wear your normal maternity bra underneath, the top covers your stomach, and the top bit (where your boobs are) has a double layer. when you go to feed, you pull aside a bit, there is a hole there so baby can access your nipple.

So that's another way to bf in public, feeling a bit more covered up.

i'm feeding a 2.5yo in public, and dealing with the "are you STILL feeding" comments, so covering up has become much more important to me, the longer i feed. I wish i had these tops EARLIER though, cos i've always felt so self conscious of my belly showing when i fed by lifting my normal tshirt, from the bottom.

Nuvo Maternity has some styles that are generous in size too, not the polo tops, they are a small make, but the other styles, like the flowy ones made out of more "jersey" type fabric are generous in sizing. I wear a medium in those, so if you have larger bust, maybe their L or XL might suit. They have regular sales, so worth joining their newsletter. The hoody style is very comfy.

i would happily put links (so you can find it easily) if i was allowed to (on this forum).

i found these two sites i've mentioned, more affordable than lots of other bf-ing wear shops on line.

Being dressed, to be able to feed easily anywhere, anytime, has made bf-ing easier for me. i used to think it was all a waste of money, until i realised, how annoyed i felt, each time i went to feed, feeling self consious. Also, i delayed buying bf-ing clothing, cos i didn't know how long i could keep it up (ddin't want to buy it only to get a few months wear out of it). little did i know we'd still be doing it two years later LOL.