I was going through my chess.com games and vote chess games today, when I was challenged by a user with the name Alexandra-Kosteniuk. The user is from Russia and has a picture of the former Women's World Champion on her page. She has not been on chess.com for long, but has beaten several masters.
I have no idea why, but perhaps she is looking for some exercise against Catalan players.
Update: The user has been revoked by chess.com as fake. Oh well, I guess it was too good to be true.