send her into school in an ordinary long sleeved longish dress with a Cath Kidston apron over the top?
I am tired of this automatic assumption that all of the "school mummies" are SAHMs with nothing better to do that source the bloody material and run up a dashing little dress and apron combo in their afternoon. And I can't bloody sew anyway.
I am redeeming myself partially by making a Dutch Viking apple cake for the little dears to trough during their Viking feast.