She supports sustainable fashion and often chooses outfits that can be worn more than once.
Kate often wears blouses with tie necks and roll necks to formal events.
Susie Hasler, a fashion expert, says that roll necks are a "wardrobe go-to" for Kate because they can be worn with so many different things.
Roll necks are conservative, which is good for Kate when she goes to events with the royal family.