hi, just thought i'd pass this along. from October - December, the promotional 5% cash back offer for the Chase freedom card applies to department stores such as Bloomingdales, Neiman Marcus, Saks Fifth AVe. i'm not afilliated but it'd be a good saving for your Chanel purchases.
https://creditcards.chase.com/freedom/selectmerchants
https://creditcards.chase.com/freedom/selectmerchants