Im a 14-16, I got the 2X and it fits perfect. Im 56 with an ample bottom and it hits me at my ankle, so someone thinner would probably get the floor length effect. It is a clingy material, so it does show dimples and what not, but I am a fan of undergarments to fix that. Can I get an amen for Spanx and Maidenform?!!
Its great for cleavage but still looks good with a cameo or pinned for a more professional environment. Totally recommend.