Is that your grandma? Nope! Just Rihanna dying her hair a dusty grey.

Why? Because she can -- that's why. The 'Diamonds' songstress displayed her penchant for drastically changing her hair today when she showed off her newly dyed locks on her Instagram page.

She captioned one of her pictures, "New color ice grey ish, call it #Brrr." Maybe the summer heat is really getting to RiRi, and she's coming up with new and innovative ways to keep cool. We guess cooling off is really just a mindset to Rihanna. We recommend air conditioning, but whatever works!

RiRi is forever fashion forward so we wouldn't be surprised if we saw a lot of ladies rocking this grey hair in a tribute to the pop star. After she shaved half of her head, there was more and more girls rockin' the same 'do. Yes, we get Skrillex did it first, but do we really consider him a fashion icon?

Rihanna's just kickin' butt and settin' trends. Typical stuff. What color will she go with next?!