She's a real family girl, that Billboard Music Awards red carpet alone last night, the singer decided to bring her grandmother along as her plus one.
And check out Granny Perry's glittering crystal-studded walking stick. We want to be toting one of those around when we hit her age. What a diva.
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Granddaughter Katy went all colour co-ordinating on us for the evening, matching her purple hair with a plum lip and shimmering lilac Blumarine gown.
Our verdict? A tad too much. We love the fairytale frock, but the dark purple hair and lip seems to wash her out. It's all a bit too teenage goth for our liking.