What can I say about these two? 
Well, for starters I guess you could safely say they are like two peas in a pod.
Literally. 
They really like to do almost everything together.  
 Even when there is not QUITE enough room for two. I have actually never seen another child share a tricycle like this, but apparently IT IS POSSIBLE, only if you really want to, that is. 
One of the funniest things they do is speak the plural form:
"Mom, 
we need a snack!" or "
We really want to dress up, right Ash?" ("Right!") or "
We don't really like to take naps." (clearly), or "
We don't like this dinner!" ("Yea, 
we really don't, Mom"). etc.  
However, Ashlyn (who strongly favors Pink everything) informed Kaia that Kaia's new favorite color should be purple. Surprisingly, Kaia obliged & has adopted purple as her new fav. Although I did tell them that they could both like the same 
thing/color/whatever, they have decided to be individuals in the color 
department...for now. This caused a bit of a problemo during Easter egg hunting, where Ashlyn thought that all the pink eggs should be hers & all the purple be for Kaia.