Rosie, love your small boobies while you can. When I was duffed with my first I had lovely b cups. I went to bed around 21 weeks wearing a bra and woke up in the morning with D CUPS!! I was in agony where my bra had dug into my skin, I was so upset and in pain that I called my boss in tears and told him about my boobs (lol) he gave us both the day off, picked me up and took me shooing for bras
My boobs never shrank afterwards I am a D to DD they just deflate like balloons when I stop Breastfeeding