To the critics: THE WHOLE POINT of the dress-design story-line was for them to wear matching clothes. Why are y'all so surprised? ╮( ̄▽ ̄)╭ Ultimately, Blanche was the one who chose the design and she's a little kid, so oc she'd pick sth cute. Besides, the simplicity of the pattern and colours absolutely match their characters, as opposed to all the pompous nobles.
If I've learnt one thing throughout my history studies and research, it's that humankind never changes. Humans are quick to mistrust and act on it if they feel like they are in the right, or feel threatened. We're doing pretty well right now, but it takes lots of work to keep things stable, so never take peace, democracy and diplomacy for granted!! I can't stress this enough!