Little detail (the trailer or wasdas Seij is) lacking top and thus the connection between the two cups is different, with wider center section. not only that, but I also usually size S and have ordered for the same once recessions M .. so: Cup size fits reasonably a little too big but not too bad but the panty is clearly too small !! Now I've already ordered a number larger and yet still it is too small ... to return the same !!