Adding a set of pajamas is always my first recommendation! It's the easiest way for your child to play pretend, and the number of kids, that I hear from, that read to their dolls before bed, is precious!
Each set comes with a pair of bottoms, and matching top, and a sleep mask. Made from a soft flannel, they'll be ready for snuggling into bed. And they are made with elastic, no buttons, making it easier for kids to dress and undress their dolls on their own.