For a discussion of the ancient sources and visual evidence for the use of the toga by unmarried women see K. Olson, in J.C. Edmondson and A. Keith, eds., Roman Dress and the Fabrics of Roman Culture, 2008, pp. 142ff.
The ancient head which was added to the present statue shows idealised features and wears a stephane. She represents a goddess, not an actual individual (cf. a head in Warsaw: T. Mikocki, Les sculptures mythologiques et décoratives dans les collections polonaises, 1994, p. 70, no. 60, pl. 35). The original head of the statue would have been a private portrait.
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