Measure each selected area. Choose your size based on whichever area measures the biggest. Your hip measurement is the widest part, not across the hip bones.
Every gown is likely to need some sort
of alterations for a perfect fit.
Remember, it is much easier to take in than let out.
So if in doubt, go up one size.
Size Chart 3 is for the following designers:
Milva (regular line, not Milva Plus)