I THINK that is a croc Dior Diorama. It doesn't have the typical markings and the strap is all chain without any leather, but the clasp is a big clue.What purse is Devon Windsor carrying here? :
https://www.instagram.com/p/BOCfR2XjTLN/?taken-by=devwindsor&hl=en
https://www.instagram.com/p/BNW6oGWDRxQ/?taken-by=devwindsor&hl=en
Here's a bigger one that seems very similar.