Kayla Nicole knows how to sell hair product -- exchanging her clothes for a bikini and getting drenched in water for a jaw-dropping ad with Rihanna's Fenty Hair line.
The influencer/model/Travis Kelce's ex shared the clip on her social media page on Wednesday afternoon ... and it's quite the marketing tactic.
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The 33-year-old understood the assignment and immediately attracted the attention of her followers -- including Cameron Brink, who let out a "Sheeshhhh!