Rihanna's Mohawk Hairstyles and Hair Trends. Over the past few years Rihanna has set some serious hair trends and now the Mohawk is yet another style that she has made her own. In order to make the style her own signature look she rocks blonde highlights to create her own spin. Her mohawk style has been seen worn slicked down as well as worn spiked up. You can see all her trademark mohawk looks below.