To the people wondering why this ship is a thing, from the ho yay! tv tropes page:
"Frozen might as well have been called "The Love Story of Anna and Elsa", and no, them being sisters doesn't detract from it at all. The main conflict of the film is that they were once extremely close but were forcibly separated by their parents, which left them miserable, and the whole plot is about them repairing their relationship. The first thing they have to say to each other after being mostly apart for 13 years is commenting on how beautiful the other looks, and later Anna is stunned almost speechless when she sees Elsa in her new, more revealing dress. Elsa is severely upset when Anna announces her engagement, leading to her first serious bout of Power Incontinence. The trolls sing a song to Anna about how love is used to help and heal, which they intend to be about Kristoff but ends up being far more relevant to Elsa. Best of all, a "The Power of Love will break the curse" ending is set up, falsely leading the audience to believe one of Anna's (other) love interests will deliver a True Love's Kiss... only to turn out that it's Anna's love for Elsa that breaks it."
If you took out the fact that they are sisters, the gay would be even MORE obvious......though them being sisters is part of the appeal ;)
last edited at Dec 17, 2014 5:20PM