Hayley Williams wears short nails painted in bright yellow polish.

Gwen Stefani enjoys a sunny day at the park with her three sons, Kingston, Zuma, and Apollo, after being dropped off by boyfriend Blake Shelton in Los Angeles, California on Saturday February 6, 2016.

Rihanna is seen leaving the Libertine Club in London, England on Monday February 22, 2016.

Ariel Bloomer wears shiny purple nails.

Gwen Stefani seen leaving the Hammerstein Ballroom after her concert and head to the Bowery Hotel for the after party in New York City, New York on Sunday October 18, 2015.

Rihanna had bright green nails at the Celebrities Sighted at The Nice Guy in West Hollywood, CA on September 16, 2016.

Maddie Ziegler had nude and silver nails at the 2014 Teen Choice Awards at Shrine Auditorium on August 10, 2014 in Los Angeles, California.

Gwen Stefani wore red stiletto nails with black tips at the 2015 American Music Awards at Microsoft Theater in Los Angeles, California on Sunday November 22, 2015.

Iggy Azalea at the 2016 Maxim Hot 100 Party at Hollywood Palladium, 6215 Sunset Boulevard in Los Angeles, CA on July 30, 2016.

Rihanna wore brown manicure to match her outfit at the 2016 Billboard Music Awards at T-Mobile Arena in Las Vegas, NV on May 22, 2016.