I had to buy new bras at 8 weeks because I was so uncomfortable with my usual underwired ones. I also needed to sleep in a bra around this time, but it passed after a couple of weeks and I was able to go back to my pre-pregnancy bras. I'm now almost 16 weeks and am going to have to admit defeat and go back into big, supportive, non-wired, non glamourous bras.
I had to change bras at 6 weeks, a few still fitted but not many, i'm now 13 weeks and feeling its time to get measured again, not looking forward to going into non wired maternity bras as i was a F cup to start with, I tried some maternity bras on at 6 weeks and the support seemed non-exsistant. Will try and get to bravissimo this week, i'd like something vaguely sexy to wear under party clothes for xmas do's.
6 weeks at first, then about 9 or 10 weeks. I went to Bravissimo and they were great - fitted me with soft cup bras with some growing room so I haven't actually had to change size since even though I'm now nearly 36 weeks. I went back there at 16 weeks to get fitted for an underwired bra for a special event (which no longer fits).
I had the same Nicola.... I bit the bullet and went for this maternity/nursing bra from Bravado, I have 3 of them now and they are really comfortable. The best thing about them is they aren't normal bra sizes, they cover a few, so they will last longer when you get even bigger <gulp>...
I am an E cup and find maternity bras give me no support, no matter where they're from. I like M&S total support which are non wired although very unattractive (basically nana bras) but I'd rather suffer a few months of vile underwear than a lifetime of droopy bangers.
at 19 eeks I was on 'set' of bras #5 - fortnately no more growth since!!! I would honestly recommend going somewhere realy good for a fitting - Having now been well fitted at bravissimo I wished I'd make the journey to one of their stores earlier, i now have comfy pretty supportive bras and whilst they cost a few more punds its honestly money well spent. I bought cheaper ones to begin with, but I went from 34D-G in no time and have found that as ive got bigger I needed the better quality ones dont know if that helps or confuses!