It looks like GuP is doing a crossover with Princess Principal on "Great Tankery Operation". Chise is wearing the Pravda outfit with the weird puffy shorts that Katyusha wears, but she is holding a tank shell like the loaders on the KV-2, so I don't know if it is technically Katyusha cosplay or not.

HawkeyeNFO said:

It looks like GuP is doing a crossover with Princess Principal on "Great Tankery Operation". Chise is wearing the Pravda outfit with the weird puffy shorts that Katyusha wears, but she is holding a tank shell like the loaders on the KV-2, so I don't know if it is technically Katyusha cosplay or not.

Pretty sure it’s Katyusha that Chise is cosplaying since Katyusha is wearing Chise’s spy uniform. Also, you forgot the pic of Dorothy cosplaying as Darjeeling