1) Q: Are straps adjustable?
A1: Yes! It’s not your normal silky slip, but it’s comfortable and glides over your dresses easily. I even slept in it one night.
A2: Yes best garment I have ever bought I plan to Oder the black
2) Q: Will this help keep dresses from sticking to leggings?
A1: I haven’t tried that but I would think so.
A2: Yes. It helps your clothes hang nice.
3) Q: I’m a 10/12 5’9” 150lbs what size would you suggest?
A1: I am 5'9 and 157 pounds and I got it in an XL. I have a 39" bust. It fits well.