Twins?

Is it possible to deliver twins that are 2 whole years apart??  I'm starting to think so!  It is so amazing to me how much my girls look alike.  I ran across this picture of Addison last night and was floored at the similarities.  So, I couldn't resist posting them side by side.  WOW.  Can you tell who is who?  The first picture is Addison at 10 weeks old.  The second picture is Melody at 6 weeks old. 

Addison at 10 weeks

 

Melody at 6 weeks