Written by blazetail :

 

Those who are fans of once upon a time will know this but it appears as if season four of the show will have Elsa in the show.

Although this could be anyone the fact the dress design and powers match Elsa I thought it best to post news for frozen fans. (after typing this it was confirmed via facebook it is Elsa)

She appears in the last seconds of the last Episode in season 3. She appears from blue goo split from a bottle (for lack of a better word) which character in the show Mr. Gold/Rumpelstiltskin had locked away in a vault with other dark magic he could not ‘control’

A nod to Elsa not able to control her magic?

 

Latest forum posts :
Sweet mother of mercy, "let it go"! lol JerseyCaptain - 16 days
Should "Frozen" get a sequel? [possible plot spoilers] Juuchan17 - 37 days
Official written continuation for "Frozen - coming in 2015 Juuchan17 - 55 days
Frozen Fever Juuchan17 - 77 days
Do You Want to Build a Meth Lab? (Frozen x Breaking Bad) steet - 95 days
Elsa and Anna in Once Upon a Time angryunicorn - 199 days
Which Character and Why? Roiffalo - 302 days

Latest site comments :
When one compares the eng... jerseycaptain - 20 days
There's no proof that a t... MightyBalto1925 - 20 days
It'll probably happen som... steet - 20 days
I, on the other hand, am ... jerseycaptain - 20 days
To tell the truth, I kind... Dragon Tamer - 22 days
this joke is just as grea... kirinoha - 22 days
oh god please no just wh... Captain Haru - 22 days
lol nope. xD Koak - 22 days
Beautiful pieces of artwo... Pawface - 34 days
not what I expected:red: ... osxd - 53 days