Katy Perry In Alexis Mabille @ American Idol

Katy Perry  judging  American Idol

She wore a red Alexis Mabille Spring 2017 Couture gown styled with red Brian Atwood patent leather ankle-strap sandals.

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@katyperry in my BABE sandals yesterday for @americanidol. RED HOT!!! #highheels #heels #katyperry #stiletto #fashion #red #madeinitaly #sickshoes #brianatwood #thesexisintheheel

A post shared by ＢＲＩＡＮ ＡＴＷＯＯＤ (@brian_atwood) on May 7, 2018 at 5:18am PDT

She is wearing  8 Other Reasons Shine On earring.