Looking like blood brothers?

I have had so many people comment on how much Caleb looks like Isaac and how they have very similar features. I see it too. I think it's amazing how when you adopt a child and have biological children, they sometimes end up looking so much alike. I'm sure I will soon be getting the "are they twins" in public. Not sure how I'm going to answer that just yet but we'll figure it out. So you be the judge, do they look alike?

First 4 pictures are Isaac in his Pooh sleeper and hat when he was 4 days old!









The next 4 pictures are of Caleb in the same outfit at 11 days old!