I mean you could use a muscle suit but not a store bought one. Those look extremely fake and are meant to go under clothes not be open like what you need for this......
Adelheid (KHR!)- 85% done
Fem!Austrian War Succesion France (Hetalia/Nyotalia)- 10% done
Fem!Izaya (Drrr!)- 90% done
Magent!Teto (Vocaloid)- 95% done