I have tops ranging from XS to Large, and they all fit!
Dresses are reasonably consistent, but I may need a size 8, 10, or 12, depending on the cut.
Jeans and leggings are nearly always too short, it's difficult to find them with a 34-inch inseam.
The only women's clothing sizes I have found to be reasonably accurate are for socks. Panties are next. Although there are occasional deviations between manufacturers, panty sizes are reasonably consistent.
Unless you have already found the size from each specific manufacturer that fits you, be prepared to visit the dressing room or make a trip back to the store to return the items which don't fit. If you want to reduce the need to use a dressing room or return ill-fitting clothes, try taking a small measuring tape along, one of those tiny 3ft models should be plenty. Also don't be afraid to gently stretch a garment you are looking at to help judge if it will fit.
Love always -- Jessica Rose