Stay away, I have purchased a lot on here! But from this summer Vestiaire service came to unuseful completelly. 
Once I paid the order, I discovered another order with another items, another price and another cost of delivery, which was high increadibly on my Vestiaire account.
Moreover,
I did not receive this "fake" order, and, in the same way, I did not receive my order, which I really placed.
I received no help from Vestiaire Support with this strange and abnormal situation, Vestiaire customer service did not explain anything as to why this happened, and I did not get a refund for this incorrect order that I never placed.
All my billions of messages to Vestiaire support were ignored.
Later, I myself discovered that this item, which I did not receive and for which I was charged, appeared again in the list of items on sale and from the same Seller! So, this item, which was not delivered, returned to the Seller and went on sale again.
I notified Vestiaire support about this, but again, this information was also ignored. This seller is listed as a Trusted Vestiaire Seller!

Vestiaire customer service ignored all my requests, all my questions about my real order that I made, and all my messages asking me to look into the situation where my real order, confirmed by picts on my part, was replaced with a “fake” order that I never did and I never received.
Losing money, a lot of nerves, a lot of stress - this is about Vestiaire Collective, how it works.
I can attest to other customers' experiences, Vestiare's support is very poor. I don't recommend Vestiaire Collective longer.
Honestly, stay away. It's very nice of me to give one star, they deserve zero stars! They don't care about good clients! Date of experience: August 08, 2023’