DS2 is two weeks old, and so far I've been making do with the scabby old bras from when I was feeding DS1, but they are barely covering me! Do you think it's safe to get measured and splash out on some shiney new bras? Would be nice to be able to pick toys up from the floor without my norks escaping!
Now is a fairly good time. Try to get it fitted as tight as you can comfortably bear in the band as your back will get smaller. Your boobs will probably settle to slightly smaller over the next couple of weeks too so don't give yourself too much extra cup room unless you have a tendency to balloon when a feed is due. It's worth getting decent ones- you'll hate them if they go out of shape after a few washes and make you look droopy!
As marriednotdead said, but I'd add a vote for Anita underwired ones! Yes underwired are fine once they fit properly and make such a difference if you're bigger than a C cup. Having a proper bra makes you feel like you're back to normal again I found (or at least getting there!).