You will need this MESH
Sifix at TSR does have some lovely dresses. I decided to use patterns for the top and I think by doing that, my recolours are more suited to an everyday situation. However this outfit is found in everyday and formal and I did not change those settings for my recolours.
I have all of the expansion and stuff packs with the exception of Star Wars and the latest one. (I can't even remember what it is called) I do keep my game updated and patched.