Here is a heart shaped placenta. Why a heart shape you ask? Well some women have a "heart shaped" uterus. A bicornate uterus, commonly referred to as a "heart shaped" uterus, is a type of uterine malformation where two "horns" form at the upper part of the uterus. Sometimes if the septum is severe it can cause fertility problems. So if have a "heart shaped" uterus and the placenta attaches at the top of your uterus you will have a placenta that could look like this. This woman obviously did not have a severe septum but it is noticable.