The 25-year-old singer shared pictures of her new look on photo-sharing website Instagram, reported E! online.
"Everything feels like touchdown on a rainy day," the singer captioned.
Rihanna followed up with another shot with the caption, "New color ice grey ish, call it Brr."
For her final pic, the star appeared nude with hair falling across her face, she added, "Grey is the new black! Blondies, it's quiet for y'all!"
Previously, the 'Umbrella' hitmaker donned bright red strands.