This top is really comfy and fits well. I’m a size 12 with 36DD chest and I bought a M in this top. I bought it for running on these colder winter days but It’s a bit thinner than expected so will probably be better for slightly cooler spring days to keep the chill off. Not quite warm enough for winter but fine for layering under another long sleeve top. It also doesn’t have thumb holes like running tops usually do so that’s why I only scored it 4. It’s great value for the price though and liked the colour. The green one is quite a nice colour too. 

I’m a standard size small in all activewear but I got a medium in this as Myprotein always small fitting and I wanted to wear it over a top etc. It’s a nice fit with room for movement. The material is very thin and quite sheer which doesn’t show in the pics.  Will be nice for the warmer weather as a light top. 

Fits perfect! I'm a size 10 and got a M. Nice breathable material