Fusion of the two Mullerian ducts and establishment of vaginal canal are completed between 10th and 17th week of intra-uterine development. There is presence of double uterine bodies with two separate cervices and often a double or septate vagina. Women with congenital malformations of uterus usually have higher incidence of complications during pregnancy and delivery. Pregnancy in such a uterus causes various complications like spontaneous abortions, preterm labour, abnormal presentation and increased incidence of caesarean delivery. In case of single pregnancy in uterus Didelphys, literature shows the right uterus having pregnancy predominantly. We report a rare case of uterine Didelphys with pregnancy in left horn diagnosed in her second pregnancy.