This retrospective study examined the gestational age at which differences were observed between birth weights and birth lengths of infants whose mothers differed by height. Infants whose gestational ages were between 24 and 42 weeks born to women 59-62 inches (150-157 cm) tall were compared to similar infants born to women 66-69 inches (168-175 cm) tall. Significant differences occurred in birth weight and birth length from 35 weeks onward. The infants of the shorter women were symmetrically smaller than the infants of the taller women as the infant ponderal indexes did not differ.