I got fitted for Mat Bra's at 20w at Myer. The lady who fitted me was lovely and explained that when fitting they allow for you to cont growing so the bras I got at 20weeks should fit me once my milk arrives, I did the same thing with DS and had no problems once milk came in and settled down. I think the main thing is to find someone who is good at fitting maternity bras and will take the time to find the right one.

The main issue I had with being an E cup is the more supportive bras aren't that attractive (nana bras!!!), in the end comfort and support had to take priority.

Good luck!!!