I can’t say I have a favorite, as I do different things at different times.
Sometimes I wear control top tights to hold me in. In warmer months it might be control top pantyhose. Other times I’ll wear a panty girdle over a thong. On occasion I’ll wear a gender bending g-string.
For shaping the hips, I’m often in a wide skirt so I don’t worry about padding. Occasionally I’ll wear a petticoat, or in the summer a soft tutu petticoat to add just a bit of volume. Occasionally I’ll wear a padded girdle. But most of the time I don’t bother.
Comedienne Carol Burnett had a number of skits where she would play a dumb sexy secretary. She would always walk bent over with her rear sticking out. When asked why she did this, she would reply that she was flat back there. If it’s good enough for her to be flat, it’s good enough for me too.
Occasionally I’ll wear a corset to pull in my waist. But most of the time I don’t worry about that either. It’s too much effort to put on, especially if I’m not going to be out for too long, or I don’t want to have trouble breathing. I also find when wearing a corset it is more difficult to keep my legs together. I can’t sit back in a chair, I have to sit closer to the edge.
In short, I’ll wear something to keep me from tenting the skirt, but most of the time that’s about it. And what I wear depends on the season and occasion.