Background: Vascular malformations are relatively rare disorders of the vascular system and its maldevelopment can present at birth. Case description: A 21-year-old primigravida presented at 38⁺⁴ weeks of gestation in the latent phase of labor. The patient was a known case of lower limb congenital hemangioma/arteriovenous malformation. The patient claimed to having been born with the deformity at birth, which presented as a small swelling over the lateral aspect of her knee. The patient had procured a single magnetic resonance imaging report that she had undergone 7 years back, which stated diffuse subcutaneous or intramuscular short T1 inversion recovery (STIR) hyperintense lesions in the left thigh and leg as described with phleboliths in the lower third of the thigh and to include the possibilities of venous malformations and venolymphatic malformations. There was anticipated difficulty in delivery owing to poor limb development, limb deformity, and inability to flex the hip and knee, and probable cephalopelvic disproportion was present. Patient spontaneously progressed and underwent full-term vaginal delivery and right mediolateral episiotomy to deliver a live baby girl of birth weight 2.443 kg and APGAR score of 8/10 and 9/10 at 1 minute and 5 minutes, respectively. Conclusion: The disorders of the vascular system especially of the lower limb and pelvic girdle cannot be ignored as it can pose many complications during delivery.