My long time fave is vasserrette, but I believe it is now vanity fair (?). By far both brands are comfy, and because they have raised edges you get some really nice vpl.
Someone mentioned bikini bottoms as panties. I bought 2 high cut bikini bottoms from amazon, and it feels amazing as panties. Both the bikini bottom and the vanity fair hold my hip/butt pads in place quite well until I can secure them with tights and shapewear.
The bikini bottoms have an even more pronounced edge, so you get even better wpl.
I have 2 pairs from Katie and Laura. The fabric is incredibly light and it feels even better than the vanity fair ones. But they aren’t strong enough to hold the hip/butt pads in place. However, I can tell with the edges you still get wicked vpl.