It's been noted a lot of her jewellery is actually fake.But how can a personal shopper afford this much expensive jewellery?? She has like 10 stacks on one arm of VCA and Cartier. Also what do you mean by personal shopper? So dodgy, like her Botox.
As a personal shopper, you may have a client that wants a bag or some other item that is hard to get hold of, or not sold in their country perhaps. You can source it for them and charge them a fee for doing so, around 20% is customary. Then have it shipped to them safely.
Also you can cut yourself in on deals for example her introducing client to Birkin resellers or tracking down specific bags. Having arrangements with people like this can bring in money.