This study investigates the referential forms children use to introduce characters in Swedish, in a cross-sectional sample of oral narratives by 100 Turkish/Swedish bilinguals aged 4 to 7 and in a longitudinal sample from age 4 to 6 (N = 10). We analysed development with age and how language proficiency (expressive vocabulary) and exposure affect children’s use of referring expressions, with a focus on referential appropriateness. In addition, a qualitative analysis of the characteristics of high- and low-performing children was carried out. The results show significant effects of age and language proficiency, but not of language exposure on appropriate use of referring expressions. At age 7, 69% of the characters were introduced with an indefinite NP. The Turkish/Swedish bilinguals were found to lag behind in their use of indefinite NPs in comparison to Swedish-speaking children investigated in previous studies, with little crosslinguistic influence from L1 Turkish.