In Fate/Grand Order's Shinjuku Phantom Incident story scenario, either Female Ritsuka or Male Ritsuka need to disguise themselves in order to infiltrate a ball, and as the opposite gender to confuse the enemy. Female Ritsuka dresses in a suit to look like a man. Male Ritsuka... well, he has to crossdress. You can watch the segment HERE.

Neither of these outfits were officially depicted until Male Ritsuka's in the official Shinjuku manga in 2023 (alongside several alternates), so artistic license was used to show what the Ritsukas might have looked like.