Do they look alike? I don't know, but at two and five months, they are already starting to enjoy each other as sister and brother.
Alaina brings Stephen his toys and is learning to set them gently and slowly on his lap. She is quick to let me know if he spits up or works his way off his blanket. She tells him "Good morning Stephen.", "I love you Stephen.", and on a few occasions when she has startled him into crying, her "I'm sorry Stephen!" has been quite sincere.