PURPOSETo examine the longitudinal associations between parental perceptions of their child's actual weight (PPCA = parental perception of child's actual) and ideal weight (PPCI = parental perception of child ideal) in early childhood and the child's own perceptions of their actual weight (APA = adolescent perceived actual) and ideal weight (API = adolescent perceived ideal) during early adolescence among a low-income population.METHODSUsing a longitudinal study design, 136 child/parent pairs were asked to assess the child's actual and ideal weight using figure rating scales. When children were 4-7 years old, parents reported on their perception of their child's weight; when children were 10-12 years old, the child reported on their own weight perceptions. Actual weight, ideal weight, and the difference between ideal and actual weight perception were assessed at the respective timepoints. Regressions were used to examine the relationship between parental weight perceptions (PPCA and PPCI) and later adolescent weight perception (APA and API).RESULTSOn average, PPCI was higher than PPCA, whereas API was lower than APA. We found a positive relationship between PPCI and API (β = 0.309, p = .029). PPCA was positively associated with API (β = 0.304, p = .015) and marginally positively associated with the APA (β = 0.242, p = .077). However, the difference between PPCI and PPCA did not predict either APA or API.CONCLUSIONSParental perception of their child's weight may relate to the adolescent's weight perception, particularly ideal weight. However, several null and marginal associations suggest that parental weight perception in early childhood may not be the most salient factor in determining weight perception in early adolescence.LEVEL OF EVIDENCELevel III, well-designed longitudinal cohort study.