Do these exist? I have some bottom-shaping pants, but they are made of nylon and elastane and I don't think that's a healthy combination in a pair of knickers.
Also, I want a pair that don't ride up. I am pear-shaped and I find that any knickers I wear ride up over my butt cheeks and I'm fed up with constantly needing to adjust them. Obviously, when out and about it's not always possible to do this, so I constantly have this feeling of my knickers not fitting snugly round my bum.
I'm not looking for Spanx or similar - they are far too tight and uncomfortable for everyday wear - I want something flattering and comfortable. Does anyone have any ideas?