Camila Cabello (Fifth Harmony) seen leaving X Factor semi-finals in London, United Kingdom on Sunday December 7, 2014.

Zehdaya Coleman had short nails covered in dark burgundy polish

Kylie Jenner wore round nails painted in light pink polish

Bebe Rexha wore short round nails painted in light blue color

Selena Gomez at the 2015 American Music Awards at Microsoft Theater in Los Angeles, CA on November 22, 2015

Meghan Trainor at the 2015 American Music Awards at Microsoft Theater in Los Angeles, CA on November 22, 2015

Katherine McNamara at the 84th Annual Hollywood Christmas Parade “The Magic of Christmas” at Hollywood Boulevard in Hollywood, CA on November 29, 2015

Brec Bassinger at the 84th Annual Hollywood Christmas Parade “The Magic of Christmas” at Hollywood Boulevard in Hollywood, CA on November 29, 2015

Meghan Trainor wore adorable Charlie Brown nails, glossy yellow with black serrated stripes

Kesha had a special Halloween manicure: blue nails with rainbows and clouds design by Miho Okawara