Sykes has extremely long hair that she braids and pins to her chest. Ladies, avoid high hair, doubly-so if sprayed. Aside from the inconvenience, such garments can also be dangerous as a leader might be looking for a way to get around your garment rather looking to avoid other dancers. You may even have to baste shut men's long sleeve shirt cuffs because the buttons can get caught in the lady's hair. The waist and bodice should also not have excessive fabric.
Jewelry can sometimes catch on lace or other loose weaves.
Long skirts that fly out when you spin can often be an interference. This is particularly true when they're cut so that they fly out from higher than mid-thigh. The shorter the skirt, the higher the fly-point can be. Avoid silk shirts without an undershirt. This is a personal view of what women should and should not wear to facilitate the mechanics of Social Dancing, written by a man.