You can purchase genuine celebrity posters at the following places: 1. Purchase from the celebrity’s official website or fan website. These websites will provide celebrity posters, photos, signatures and other merchandise, and some also provide customized services.

2. Purchase on professional celebrity peripheral product websites. These websites will provide various celebrity peripheral products, including posters, photos, badges, etc.

3. Purchase from online poster stores. These stores will offer various types of posters, including movie posters, music posters, celebrity posters, etc.

4. Purchase in a physical store. Some record stores, bookstores, or poster shops sell celebrity posters.