‘She loves her long nails, she does the iPhone test - if she can still type then they're ok,' Kimmie tells People.
While some stars just let the celebrity manicurist get on with doing their nails, Rihanna is really involved with the trends she sets.
Recently she's been rockin' long square nails and Kimmie says that the singer came up with that idea herself.
So, let's hope Rihanna gets herself over to the UK soon because we need her to set the nail trends for the summer festival season!
Rihanna does her iPhone nail test...
Charmian Harris
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