5, Measurement problem 1: Max top hip width for a trouser.

Styling:  Normal fit skinny

Fabric: Stretch twill

Problem:

See below size spec, top hip can not be chieved to 46cm, it should be approx 44.5cm.why?

Measurement	Sizes
Points	12	Amended spec
Waistband depth	3.3
Waist at top edge frt and back together	38
Top hip 8cm from top w/b - CURVED	46	44.5
Lower hip 18cm from top w/b - CURVED	48
Thigh width at crotch	28
Knee width at 33cm from crotch	17.5
Calf 46cm from crotch	17
Hem width	12
Front rise incl waistband	26.5
Back rise incl waistband	37.5
Inside leg	74

1) Waistband would be too shape/curved if keep top hip width at 46cm.
     and it looks too strange and not fit the body, see below pattern.
     however waistband shape looks OK when top hip width at 44.5cm
     

2) Why 46cm top hip to cause waistband too shape.
    The body waist line width woule be more wider if top hip width to be increased,
     and in order to correctly attach waistband into the body waist line,
     the under edge of waistband should be increased too,
     but top edge of waistband at 38cm, no change,
     so waistband would get a more shape if top hip increased,
     see and below patterns.
    

 3) Top hip at 44.5cm as below sample.

 Another option

If you really want to maintain the top hip width at 46cm, the top edge of waist width should be increased to 40.5cm, in order to keep a normal shape of waistband, see below photo.