It kinda looks like her outfit is multiple components. An undershirt skirt and vest, that is unless this is a Fred from Scooby Doo situation where they have a visually identical outfits that are all mechanically different. Regardless she probably just rolls up the skirt, source I have gone to the bathroom in both a toga and a kilt.
It looks like a one-piece outfit in which case I think women tend to just pull it all upwards when they need to use the toilet
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It kinda looks like her outfit is multiple components. An undershirt skirt and vest, that is unless this is a Fred from Scooby Doo situation where they have a visually identical outfits that are all mechanically different. Regardless she probably just rolls up the skirt, source I have gone to the bathroom in both a toga and a kilt.