6 Weeks, Who's Who?

Today Alyssa is 6 weeks old. I was looking at some old pictures of the rest of the kids and thinking boy they sure do look alike. So I thought I'd see if you could tell them apart. So here's the four of them at about 6 weeks old. Can you tell them apart? Leave me a comment and tell me who's who. In a week or so I will post the results.