I want to buy some new Jackets off of eBay. I was 40R but now dunno -- maybe 38R? 36R?
Question is: how do I take correct measurements in order to buy Jackets/Shirts/slacks off of eBay?
FYI -- I'm 170lbs; 5'11.7"
You'll need someone to take them for you. You can have a tailor do it or simply buy a measuring tape and ask a friend. There are a bunch of YouTube videos on how to measure. Given you've only lost weight (your arms/length didn't shrink), you'll need your new shoulders, chest, and waist. Congrats btw.
Your first move should be to sell me your old 40R designer suits
I doubt very much you will be a 36, maybe a 38.