My Little Pony: Friendship Is Magic Season 4 episode 18 - Maud Pie
Maud Pie is an Earth pony and the older sister of Pinkie Pie. She is first seen on a portrait as a filly in Pinkie Pride and she is set to appear in the season four episode of the same name.
"Pinkie Pie’s sister Maud is coming to Ponyville, and Pinkie can’t wait for her friends and sister to meet and become best friends. But when it turns out that Maud is very different than was described, the girls find bonding with her a challenge."