FREE: 38C Lily of France Bra~I'm SPRING CLEANING!!!

Well the 34 is much smaller around, so it wouldn't fit someone who needs a 38. So no, I do not believe they are sister sizes. I think a 36DD and a 38D are pretty close, from experience. When I like a bra and I can't find a 36DD, or if the 36 is a bit too tight I try the 38D. Sometimes it works, and I can wear it on the tightest hook, sometimes the 38 is a little too loose....depends on the maker.

It might be a little too big around, even on the tightest hook. The cup size should be ok, though. This is a more expensive bra, from Kohl's, so it is made pretty true to size. If it was the other brands I have listed...the No Boundaries, I'd say yes, a 34 D could probably wear it. I wear a 36DD now in more "expensive" bras like Victoria's Secret, but the cheaper ones in a 36 are too tight. In those I can get into a 38C and even a 40C. I can wear a 38D in some VS bras on the tightest hook, but a 40 would be WAY to loose. It all depends on the brand AND the bra itself.