No, they do not. One of my sons has a birthmark on his cheek. The other doesn't. It's one of the ways that makes it easy to tell them apart. The other one has a light streak in his hair. There are lots of other ways that identical twins differ. My sons have differently shaped heads. Their voices are different. read more
Beauty marks/ beauty spots/facial moles. I know that freckles in twins may vary depending on sun exposure of the individual. read more