Sorry I would not know. I am a man and shop almost exclusively Alexander McQueen. I have never had any issues with authenticity, or damaged/used goods.
An interesting story though. On Black Friday weekend I purchased a Fendi briefcase at 50% off and then another 15% off with shipping at $20 CAN. They have since put the bag up to full price with the boutique that carries it, Fendi usually does not discount their permanent collection, so I got a bargain!

Did u contact FarFetch? I finally got a reply from them today and they will send me a dust bag later. Authenticity... I think my handbag is authentic

Never had a problem Natalie re authenticity and I have shopped here many times- they are genuine. My beef was them 'jacking' up the price and then offering a 10% sale discount.