Barbie & Her Sisters in A Pony Tale is a 2013 computer-animated Barbie film. The screenplay was written by Steve Granat and Cydne Clark, and Heavynn Gates is the lead vocalist for the movie's theme song.
Plot

Barbie and her sisters use an RV to go on a horseback-riding vacation to the Alps and go to a horse academy. They make new animal friends, and Barbie has an instant connection with a wild horse which she trains. At the horse academy, the sisters attend a festive gala dressed in their prettiest ball gowns.
Characters

Barbie
Skipper
Stacie
Chelsea
Max
Marie
Madison
Kira
From Barbie movies wikia