Quite boring if you've lived here. Only one in town and small if you've been very far out of here... However, there are still good stores and you usually can find what you need.
The Rimrock Mall in Billings has over 90 mall shops, restaurants and department stores including Dillard's, Macy's and Herberger's. The mall, nearby shopping centers and Wynnsong movie theater are just west of Billings, MT at I-90 and King Ave, close to Miles City, Livingston and Sheridan, WY.