Complex sentence: The film stars Mina Mohammadkhani, the sister of Aida Mohammadkhani, in the roles of a little girl named Baharan, as well as the role of Mina, herself.
Split into simpler sentences: The film stars Mina Mohammadkhani, the sister of Aida Mohammadkhani. In the film Mohammadkhani plays both the role of a little girl named Baharan and the role of Mina Mohammadkhani, herself.