Control underwear - recommendations?

[Doubleraspberry]

I'm wearing a very short rather clingy mini dress to a fancy dress event shortly, and while the outfit is quite out there, I'd also like to look good! I'd like some control shorts so things are smoothed out a bit and I also have some cover if/when the skirt rides up. Any recommendations? I don't need to drastically change my shape, just smooth things out a bit. Ideally don't want to spend much as I probably won't wear these often - I'm mostly a floaty outfit person.

Just don’t bother with M & S. baggy as hell even in a size smaller.

Conturve shorts. The only ones I’ve found that don’t roll down my back, and also don’t get sweaty.

Thank you! Those look ideal. Do you know if they are very squishing? I'm looking for something that will smooth my tummy a bit but not hold me in entirely as I have very little waist to start with and anything that pulls my hips in a lot turns me entirely barrel shaped.

Definitely smoothing, and give a nice shape, but not uncomfortable or too constraining.