Groves, context's measurements are pretty accurate. But since they changed it it, my 27's are the 28 measurements. Don't know if the vanity size changed our not .
27 PS with a month of wear. Tts is like 29
Waist aligned 15
thigh @ crotch 10.75
You might be able to get the waist to stretch. I wear a belt and dont want it to stretch much more. Hopefully those measurements can help you get your size