Sizing for Ladies Clothing

I started my working career many years ago working for Dillard's, my goodness did I ever get a shock as to how many different designer labels would have totally different sizing!
The advice I would like to give you today is; When you are buying clothing on okay, always look for the seller that gives hand measurements. Never go by the number size, even if you have been wearing that brand for years. Always go by the measurements, I hand measure all my clothing items, I am certainly not perfect, and will sometimes have to use the best measurement I can on some items that are difficult to measure, for instance, it is very hard to measure a cape, and also many items with Spandex.
The truth of the matter is we women are really vain, although we do not want to admit it most of the time. My suggestion for all of us is that if the size tag bothers you, just take it out, you know no one sees that tag any way. If it makes you feel any better, I am 63 years old and have watched the sizing on all clothing, designer or not, slowly change over the years. The manufactorers have slowly adjusted the numbers down and the inches up over the last 30 years. This way even if you have gained 30 pounds over the last 30 years, you may still be able to wear that size 10 dress.
To sum it all up, just always measure your bust, waist, and largest part of your hip, then add 3-4 inches for the garment to fit properly. You can always take in a waist or a seam, but you just can't add more to the garment.
Remember always buy from someone who hand measures, or is willing to do so if asked. This way, when you get your package from your seller, you garment will fit perfect everytime.