I took a chance on these. I love how they fit, soft, stretchy lace, I can’t tell I’m wearing them. I ended up buying more. I would say they are true to size.
I finally found a panty that doesn't ride up. This brief is very comfortable. I first bought a size that was too big, and it that caused it to ride up. When I bought one size smaller, (XS) my correct size, the panty stayed put. Because of the lace trim, the panty line is not really visible under my pants.