My boobs and most noticeably my rib cage size got huge in the first and beginning of second trimester. They seem to have stopped growing in the last few weeks, I'm 29 weeks. I'm sure they'll get even bigger when my milk comes in :/
Mine doubled by the time i was 12 weeks! Im now 22 weeks and they haven't grown much since but Im sure they will soon!!
I started off a C and im up to a DD at 22 weeks.
I would say yes. I'm 18 weeks today and my boobs are HUGE for me. I have never been bigger than an A and now I'm a C too. It feels like every morning I wake up they are bigger lol.