I’m not either size but it may help someone else>>> So is this a US size 16 (US) or a 6 petite???
Especially since the two sizes are not even close! 
We volunteers don’t have access to that information, but @ThunderThighs will be able to ask the right people.
Sorry for the confusion!
Hi there. It’s a Petite 6. For some reason, the back-end data also refers to it as a 16 one time. Maybe in another country?
https://www.amazon.com/Gloria-Vanderbilt-Classic-Tapered-Portland/dp/B06XPJ48GL
Lol thanks for getting that straight!