How do we know for sure? Rihanna posted this little giveaway on her Instagram feed last night with the caption "One. Week. Countdown."
Now this might just be the craziest, sexiest, COOLEST collaboration yet - we're all eyes and ears. Until then, here's a look at this gallery of RiRi's best Instagram pics.
Does she own it on the smouldering front? Yes, she do.
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