Katy Perry Tweeted THIS PHOTO from American Idol.
Buy the exact same outfit here:
Her necklace is the Jennifer Behr Corie Necklace. Buy it here: JENNIFER BEHR, FARFETCH, SHOPBOP, and NEIMAN MARCUS
Her top is the Rotate metallic strapless cropped top. Buy it here: FARFETCH, ITALIST, THAHAB, and BALTINI
Her pants are the Rotate logo-embossed metallic-finish trousers. Buy them here: FARFETCH and SELFRIDGES & CO
Get the look for less here: