Princess Cadance is an who is first featured in the alongside her husband (after the season two finale). Her debut episode gives her proper title asPrincess Mi Amore Cadenza. She is 's former foal-sitter and sister-in-law (after marrying Shining Armor in ). "" proclaims her as "The Crystal Princess!" at the end of , and a blurb on one of the toy sets featuring Cadance says that she and Shining Armor "lead the Crystal Empire together!" Various promotional materials, including a ad, A Canterlot Wedding - Part 1's Hubworld, iTunes, and Netflix summaries, the back cover of the Royal Pony Wedding, and the home page of Treehouse TV's Royal Wedding Contest site,state that she is the niece of , and the Twilight Sparkle and the Crystal Heart Spell specifies that Celestia adopted her as a niece.