When I was pregnant with Emily, The Girls they were expanding, so I went to Target to pick out a new maternity/nursing bra. I was standing there trying to decide whether I should just get one new bra or if I should get several at once (that is, were these things EVER going to stop getting bigger?!?), and another mom with a toddler came over to the same display. I asked her, "Is that your baby?" Yep. "Okay. What should I do?"
She said, "I'd wait, if I were you. When I was pregnant, I went from a C-cup to a G."
I swear that I almost passed out right on the floor. At the time, I didn't even realize bras came in letters bigger than DDD! I had to go home and lie down.