Carol of the Belles

On Hearth's Warming Eve, Sweetie Belle comes across a lonely Sugar Belle and invites her caroling, where the two Belles confide in one another about life and cutie marks.

"Once a Belle finds another Belle, it’s a promise for good.”

Sugar Belle goes to Ponyville for Hearth's Warming, even knowing Pinkie isn't there. She's unsure of her place in the new town or even in life until young Sweetie Belle find her sitting on a bench in the snow and interrupts her thoughts...