Bwock!

When you dress children, you can push the envelope a little.  Something that would look odd (if not "woo, that lady's cuckoo") on an adult can be acceptable (possibly even "cute as a button") on a child.

...But if you don't set some type of parameters, you might end up pushing that envelope right off the side of a cliff. 

Allow me to present the Chicken Dress as a case in point:

Now, before you squeal with delight and run off in search of the pattern, ask yourself-- how many occasions in a child's life really call for a Chicken Dress?  (See?  I just saved you a lot of time and trouble.  You're welcome.)