Cadance didn't know what to expect when her formerly banished Aunt Luna returned from her thousand year imprisonment in the moon. But, she's quite entertained by the hilarity.
During one particularly stressful day, Sweetie Belle gets into Rarity's makeup. Rarity demands an explanation. The answer isn't quite as simple as one sister trying to emulate another.
The princesses gave their magic to Twilight to prevent Tirek from stealing it. As a result, they end up stuck in Tartarus. The fact that things manage to go downhill here says a lot about the wonders of family.