The former Hills star, who launched a beauty website earlier this year, revealed that she combines accessories to create new looks for a single piece of clothing.
"During holiday parties I end up recycling a lot of my cocktail dresses, and just wearing a layering piece, like a blazer and tights, with it," Conrad explained to FabSugar.com.
Conrad went on to reveal that she used that same approach to fashion when creating her new pieces for design house Paper Crown, adding: "When I was designing, I was really keeping in mind the types of things you do during these months.
"You're going to a lot of holiday parties, and you want to look festive and still put together. So we had a lot of fun with that."
Earlier this year, Conrad signed a three-book deal for a series of novels about fictional character Madison Parker.
She has said that the book series will show the truth of her life as a reality TV star.