Madonna is currently flopping.
Kylie has always been a flop in America outside of the Dance charts and CGYOOMH.
I guess M.I.A counts. She tried a more commercial sound with MAYA and it didn't do her any favors. At least she has Paper Planes.
Yeah, I don't think I really stan for any "true" flops. They've all at least had one hit.
Lights doesn't flop. She does well for the type of artist she is. A lot of her tour dates get sold out, and she sells a very nice amount of albums. She has a huge stanbase tbh