Abnormal enlargement of the clitoris in fetal life may be a sign for different pathologies. To the investigators knowledge there is no published nomogram of the clitoris size through gestation and it's assessment is usually subjective. The purpose of this study is to create a nomogram of clitorial size through gestation by measuring its size in fetuses of different age in the second and third trimester.

Inclusion Criteria:

• well dated pregnancy
• singleton pregnancy
• female fetus
• appropriate for gestational age

Exclusion Criteria:

• small for gestational age
• other fetal anomalies
• maternal conditions that can cause exposure of the fetus to high androgen environment

pregnant women with a female fetus in the second or 3 ed trimester