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.

Ariel Bloomer wore pink nails with the words “thank you” spelled on them.

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.

Charlie XCX gives a live performace at SoBe’s 21st Birthday Pool Party over Labor Day weekend at Foxtail Pool at the SLS Hotel & Casino in Las Vegas, Nevada on Saturday, September 3, 2016.