I'm thinking about getting one of the breastpumps and would like the double pump but I'm not sure if it will work for me. I've read that some narrow chested women have trouble fitting both domes on at the same time. I'm very thin and only 25in around under my bust, but I think I'd probably want the large or at least the medium domes. Would I be able to fit both on my chest at the same time or would it be a waste? I'm about 30in. across at the fullest part of my chest and have a lot of saggy skin from multiple pregnancies that make me think the larger domes would be better even if I am still pretty small. I've looked around on here but haven't seen any other posters with stats like mine to compare to.