Rihanna rocks a bold red hairdo. Photo: Bauergriffinonline.com

When Rihanna debuted a bowl haircut over the weekend at Madrid's Rock in Rio Festival, we can't exactly say that we were shocked.

From '80s blonde streaks to mohawks, the "Rated R" star is constantly changing her tresses.

But we never would have guessed that RiRi would dye her hair a shade that her hair stylist, Ursula Stephen, refers to as "Matador Red."

"It's not Kool-Aid..." Stephen told our sister site, The BVX. "Black women can do it. However, I would not recommend this hue for a darker skinned woman. I would stick to streaks if it were for darker skin tones."

So how exactly did Stephen create this fiery, red hue? Head over to The BVX to find out her styling trick.

And click here for pro tips on choosing your perfect red shade!