Longer legs.
When I worked for a clothing manufacturer, I was measured to possibly become a fit model. I found out that the length of my thighs are out of proportion to the rest of my body - which also explains why I can't find a mini-skirt that's truly "mini" on me.

I have the body, shins, and arms of someone 5'7". But my thighs are really short.
Which is also why I wasn't eligible to be a fit model for pants or skirts. But they did let me fit tops.
I want longer thighs.
.