And what are you going to do once you break them? Force them to buy white button-up shirts in bulk? They already do that.
I'm still thinking about yesterday's comic. The thing is, they all dress the same! There's no way Margo dresses any more like a schoolmarm than Tommie or Lu Ann. I get that her personality is different, but what does that have to do with her style? I know they've all got that coat that she's wearing right now in a myriad of colors. Margo wears turtlenecks sometimes, but they're arguably the most fashion-forward garments any of them owns.
The only way I'll be swayed to believe they don't all just pick out clothes from the same wardrobe is if I see authentic hidden camera footage. Produce the evidence, Martin and Gabriella.