And it doesn't look like you've run the simulation on your pictures. The point is to do the following to get different 'size' for the dress, tighter or looser.

1. Parent the dress to the figure.

2. Scale the figure up and down as you please on frame 1. (The dress should follow)

3. Make sure that the scale of the figure is set to default 100% on the target frame, (ie frame 30)

4. Clothify the prop in the clothroom, set the simulation length to at least the target frame.

5. Run the simulation. Different scale for the figure on frame 1 will give different draping results on frame 30. Perfect to scale down x and z if you want a tighter dress.