Elsa is all like: "Hi. Sorry about, you know, the eternal winter thing. It wasn't exactly part of the plan..." "That's okay! I had magical hair that glowed when I sang!" "And a creepy frog." Anna and Rapunzel: "CHAMELEON!!!"
Me to, It's so annoying because she is down in the left corner when Anna storms out three the gates scene, and she is the on,y one with a corset in the holy movie, and it is Rapunzel I'm 99.991% sure because it's also the same face as Punzie and same hair. It's sooooo annoying I think
I do hope you theorized this, knowing that there're some years between the death of Anna and Elsa's parents and Elsa's coronation. Their parents could've made it way on time for Rapunzel's wedding, if they hadn't died at sea (may they rest in peace).