Today's tattoo of the day is this rad piece by Duke Riley. Riley is best known for his minimal style comprised entirely of black line work. Unlike many line work artists, Riley's style is more rooted in a sketch aesthetic rather than abstract geometry. Based in Brooklyn, Riley has become an iconic tattooer over the last two decades and his style is instantly recognizable making him a no brainer for today's pick. For more of Riley's unique portfolio, check out his artist page right here.