I want a dress code.

How is it that we as a society find it acceptable and humorous to dress our young girls in degrading clothes that make sexual and relationship references… at age 4?
Here is what I’ve seen over the last week:
One little girl wearing a “Boy Magnet” shirt
Another wearing flip flops with a 3 inch wedge heel.
A shirt that says Bratty with Attitude.
Why is this acceptable?
I know my daughter is pretty. I know she’ll someday attract the attention of boys and men. I know at some point she might enjoy it, and may feel powerful because of it. But, as a mother, it’s my job to reinforce the ideals of brains over beauty. I want her to play, learn, enjoy life, work hard, love her body and know and value how intelligent she is.
I wish every other Mother felt the same way.
When I was young, strangers would approach my Mother when I was with her and would comment on what a pretty child I was. My Mom would tell them, “She’s also very smart.”
I was never a straight-A student, but I always felt appreciated, special, and witty around my parents. I know I can entertain people through my writing. I credit my Mother for that, as she has the most joyful and easy laugh of anyone you’d ever meet. She probably gave me an over-inflated ego when it comes to my comedic and writing abilities. She was easy to entertain and her jolly laugh came freely.
(When she’d take us to Wal-Mart, my sister and I would frequently wander to other aisles… this must have been pre-sicko child molester days?) I’d look at Betsy and panic, “Where is MOM!?” Betsy would quip, “Duh, just listen for her laugh.” Sure enough, much like pressing the “handset locator” button on a cordless phone, we’d walk up and down the aisles, waiting to hear her infectious laugh. We’d run in the direction it came from, only to have to walk aimlessly again for a few aisles until it started up again.
True story.
In the meantime, I think the school she attends for Kindergarten will have a dress code. I never thought that would be a priority when I was choosing a school for my child.
Any words of wisdom for me? Veteran Moms, is this another thing I am being much too hyper-sensitive about?