I came across this designer website and thought the details of the pants style were interesting.
Specifically the wide waistbands (apparently lined with bias for stretch) and this version with an invisible zipper in the back but an elastic waistband insert exactly where you need it when you sit down:
All of the fitted pants are in stretch woven and all of the non stretch wovens are in pleated pants. I thought this comment was also interesting for this pair:
The key to our pant’s chic look is the reverse nature of the pleat; it folds outwards (instead of in), drawing a line down the front of the leg to elongate the body.
Apart from the fact that these are 5'10" models in size 4, the ideas are interesting.