In the part where they go shopping Chloe is telling Riley that they arn't going to a museum or monument they're going shopping. Notice that Riley's hair is straight ( she has longer hair than Chloe ) It stays straight when they cross the road and enter the store but when Chloe and Riley try on the dresses Riley's hair is wavy/curly. Unless they have a curling iron in the dressing room her hair should be straight.