Michelle Humphrey painted Lily Allen’s nails in a black and white geometric pattern

Lily Allen had gold seashell charms and jewels lined up in a stripe down the center of each nail.

“My nails for tonight!!!! Using my #shattered @The_New_BlackTV nail kit!! #xfactor”

JoJo had her nails painted like a city skyline with a starry night sky in the background

Lexus Amanda’s white nails

“LOVE the New Black nail polish! How cool is this ombre look??? Thanks @stephstonenails!!”

Demi Lovato wore The New Black stylized manicure for X Factor show ?.

“How cool are these nails? Thanks @stephstonenails and @the_new-blacktv…You guys are awesome!!”

Demi Lovato’s short black and gray nails were each accented with a a metal spike.

“Second nail change of the day for @ddlovato ! Love this solid grey gun-metal color from @the_new_blacktv “Anarchy” kit.”