Though underwear is not something she particularly has much need of due to her species' fur, along with a few other things usually specific to Mews, it's far from something unknown to her as she does in fact on occasion dabble a bit, albeit often more with the intent to tease others and lead their minds astray a bit easier than usual, than to actually conceal anything.

Made by the great  BATRUSE as part of one of their Regal Ruse Cafe comm batches, definitely go give them some love!