Why is it that there are more girl baby clothes than boys at the stores?

So, from observation of many stores, such as, Target, Babies-R-Us and USA Baby I have found that there are more options for baby girls. There are not as many choices and options for baby boys, that portion of the store is usually very small. Any ideas as to why this is?
These are all great ideas…keep them coming!! Has anyone thought about this before when walking through clothing stores? Am I the only one?

Because we live in a society that generalizes boys and girls. Girls are expected to be pretty and like pink, and boys are expected to not care about fashion and like sports.

“and girls can go really girly or not so much, where as boys can pretty much only go boyish.” << Why though? Because that's what society expects.

Michelle Pfeiffer & Jeff Bridges – Makin’ Whoope (The Fabulous Baker Boys)