Sitting appropriately while dressed is something I've always had difficulty with. I'm a bigger person, so the traditional closely crossed legs posture of most women is something that I'm just not physically capable of. There's just not enough room to be able to cross my legs in a properly feminine manner. I try all sorts of different postures with my legs to keep them together, like the good ol' ankle cross or just trying my best to keep my ankles and knees together. But there's real physical discomfort -- it's a physical effort to keep my knees from drifting apart. I feel like sitting wrong is one of those things on the list of "instant tells." The only thing that I've found that really helps is wearing a pencil skirt (because it forces my knees together when sitting), which just ends up accentuating my distinct lack of anything remotely like a feminine curve.
Aside from the clear anatomical differences in women's and men's hips, is it standard for others that sitting in a "ladylike" way would cause enough fatigue and discomfort in the thighs and hips to keep you from sitting at all? Is it maybe a muscle memory thing from 30+ years of being able to sit any damn way I please?