When it comes to his personal style, Pharrell Williams only continues to surprise us! Just when we thought his now-infamous Vivienne Westwood hat had become his trademark, the star made a strong case for guy-liner (aka eyeliner for men) during his concert at London's O2 Arena. Of course, his trademark mountie cap was part of his onstage ensemble, but the beauty element certainly added an unexpected touch.
Guy-liner is nothing new---we've spotted the it on stars like Johnny Depp, Jared Leto, as well as Billie Joe Armstrong of Green Day among many others in years past, and hair color brand Manic Panic even has an aptly-titled product ($15; manicpanic.com) for men who want to get in on the trend. We want to know: What do you think of Pharrell's bold beauty move? Sound off in our poll below!