The usual length of a size ten evening dress may vary drastically, depending if you're wearing a knee length dress or a full length dress. A size 10 full length dress measured from the underarm down would be around 130cm or 51 inches.

a formal dress that goes to your ankles.

A knee length cocktail party dress is appropriate for wearing to most work parties. If the work party is going to be particularly formal then a calf length or even ankle length cocktail party dress may be required.

length is not at all a matter, it should suit us good and, should show our beauty healthier and richer is what about the dress...

• There is nothing wrong with the mother of the bride wearing a knee length dress.