Katy Perry at amfAR’s 23rd Cinema Against AIDS Gala at the Hotel du Cap-Eden-Roc during the 69th Cannes Film Festival in Antibes, France on Thursday May 19, 2016.

Recording artist Kesha attend Markus Klinko Presents his ‘Bowie Unseen’ Exhibition at Mr. Musichead Gallery on May 19, 2016 in Los Angeles, California.

Katy Perry attends the Manus x Machina Fashion in an Age of Technology Costume Institute Gala at the Metropolitan Museum of Art

Khloe Kardashian has black stiletto nails.

Actress Karrueche Tran attends the 102.7 KIIS FM’s Wango Tango 2016 at the StubHub Center on May 14, 2016 in Carson, California.

Jess Glynne performs live in concert at Haydock Park Racecourse in Lancashire, Haydock, United Kingdom on Friday July 1, 2016.

Manicurist Tom Bachik used L’Oreal Color Riche 845 Platinum Chic for Blake Lively’s 2016 Cannes nails.

Iggy Azalea shows off her engagement ring and her nude manicure at the iHeartRadio Music Awards in Los Angeles, California on Sunday April 3, 2016.

Dove Cameron at the 100th DCOM Adventures In Babysitting LA Premiere Screening at the Directors Guild of America on June 23, 2016 in Los Angeles, CA

Iggy Azalea wore white short nails at the 2015 Billboard Music Awards held at the MGM Garden Arena in Las Vegas on Sunday May 17, 2015.