Hi ! I ordered the size 6 in the Amanda Silky blouse and matching skirt. The set is quite stunning on and i really enjoyed wearing it. The blouse is a true to fit size 6. I found the skirt to be a 6 that sits rather than hugs you, IMO if you are a small 6 it may be a bit roomy, but could be easily taken in. I quite liked that it wasn't super tight.
The reason that i didn't give it 5 stars is that the zip, which sits at the bottom of the top (for some reason it zips from the top of your neck to the bottom of the top), hangs down your back, past the top. Although the model shows no gap at the back, there was definitely a gap for me the whole time i wore it - with the little zipper hanging down my back. It's a small thing, but something to be mindful of and something that annoyed me a little.