I am not Cloneing Around

We have a program on our computer that randomly displays pictures that I have stored over the years. There are times when a picture of Alyssa will come up and I think it is Bella, it is like Bella is a little clone of Alyssa. They may have their own personalities, but in the looks department they are sisters through and through!

You tell me if I am just seeing things - can you tell who is who???