Baby Butts

I love little baby butts - who doesn't? Well maybe not when they have a stinky diaper I guess, but they are so cute :o)  I took a picture of Summer when she was 7+ months of her naked butt and it was one of my favorite photos so I figured I would do it again with Pepper.  Uh, I can't believe how hard it was to get a shot of Pepper, that child would not quit moving, constantly trying to spin and get my feet.  It was funny but cute, and I think I got a photo that is similar to her sister.  What do you think, can you tell them apart?