She doesn't have a stylist, she just borrows clothes from designers. She said in an interview
"Chanel have been very kind and have lent me a lot of stuff for this particular junket. I've always loved how classice and how beautiful their clothing is and how original. My mum always wore Chanel, but I love other designers too. I think Chloe is great. Alberta Ferretti is really lovely, Agnes B has some younger funky stuff whcih I really like. Converse shoes are great."
I think I read somewhere that she also got to go to the House of Chanel and go through the clothing to pick.