It's like a skirt, but also shorts! Which I'd heard of before, but only recently learned that they can have POCKETS.

This probably isn't super important to the plot, but I've wanted this moment ever since deciding to not draw Rhoda with a purse.

And now to answer the question everyone's wondering:

Diane is ordering for herself and Lucy, and Rhoda is ordering for herself and Catalina.

(Naturally, I don't know if anyone was actually wondering that, but it occurred to me that there was a possibility greater than zero that someone might assume Diane expected Rhoda to pay for everything for some reason.)