The shirt says it all. Try to be anything other than badass when rocking this t-shirt, featuring Katheryn Winnick and an extra motivating mantra she chose herself. A real-life black belt and martial arts master, the Vikings star kicks just as much butt off screen as her warrior character on the show. So who better to remind you how to take on every day? Funds raised support Women In Film, a nonprofit that fights for equality and advocates for women in the entertainment industry. We definitely want her on our side and this shirt on our back.