Hold tight to your umbrella, because Kacey Musgraves's iHeartRadio Music Awards performance is about to blow you away. On Thursday, the singer gave a magical performance of her song "Rainbow" alongside Coldplay's Chris Martin [1]. The Grammy winner [2] looked like an actual pot of gold as she sat on top of a neon rainbow while donning a gorgeous yellow dress. Prepare to get lost in her beautiful performance ahead!