American Idol Tweeted THIS photo of Lionel Richie, Katy Perry, and Luke Bryan at their premiere event.
Katy is wearing the Stella McCartney Animal Print Dress. Taylor Swift wore the same dress on The Tonight Show Starring Jimmy Fallon, as seen HERE! Buy it here: FARFETCH, MYTHERESA, NEIMAN MARCUS, and NET-A-PORTER
Her earrings are the Maryjane Claverol Desideri Star Earrings. Buy them here: LUISAVIAROMA
Her necklace is the Lele Sadoughi Crystal Triple Hoop Necklace. Buy it here: LELE SADOUGHI
Get the look for less here: