The most common cause of 46 XX DSD is due to congenital adrenal hyperplasia with varying degrees of virilization. Females with CAH do not produce an anti-mullerian hormone (AMH), therefore the internal genitalia, which are Mullerian derivatives, develop normally. We report a unique case of CAH with aplasia of the uterus and upper vagina. The clinical, laboratory, and imaging findings of the patient are presented with a review of the literature. We report an ongoing case of a 20-year-old patient with ambiguous genitalia and primary amenorrhea. On physical examination, we found that she had an underdeveloped breast and clitoral virilization with separate urethral and vaginal openings. We performed a G-banded chromosome analysis, with 46 XX results. Laboratory test showed her 17-hydroxyprogesterone level was immensely elevated, while her FSH, LH, and estradiol level was below normal. Ultrasound imaging revealed the absence of uterus and cervix. Nevertheless, we found a diminutive uterine remnant during diagnostic laparoscopy with normal ovaries and fallopian tubes. On vaginoscopy examination, we found her vagina to be 5 cm long with blind end. In the presence of primary amenorrhea in patients with CAH, it is important to investigate for possible associated mullerian anomalies.