The underrepresentation of women and girls in children's picture books and the use of gender stereotypes persists, as seen in a sample of 335 books published between 2010 and 2020. Previous research showed a significant lack of female representation in children's picture books and stereotyped presentation. A pilot study was conducted to establish stereotypes for coding gender representation of characters in children's picture books. This article shows that children's picture books continue to be a significant source of gendered stereotypes, specifically that females should engage in domestic tasks and care while males should be aggressive and breadwinners. Additionally, this article identifies an ongoing disparity in numerical representation, with a female-to-male ratio of 1:1.35 in the picture books sampled. Future research should address the impact of this underrepresentation and stereotyping in picture books on a child population.