So to clarify. This is a picture of THOR and ODINSON. As the hammer says… “Whosoever holds this hammer, if he be worthy, shall possess the power of Thor.” So, Natalie Portman is playing THOR. Chris Hemsworth is playing ODINSON, otherwise known as “Odin’s Son.”
Now this is based on the comic, so I doubt anyone will stop calling Chris Hemsworth “Thor”, because that might be confusing. So he might be “Thor” and she might me “The Mighty Thor.”
Don’t even THINK of calling her “Girl Thor”, you male chauvinist pig.