Rock star Nikki Sixx's wife Courtney explains how daughter Ruby, 4, had to ‘cowgirl up’ after Wyoming move

Motley Crue rocker Nikki Sixx's wife Courtney Sixx detailed how their daughter Ruby, 4, had to “cowgirl up” after they moved to Wyoming. Courtney said that Ruby loves horseback-riding, mucking out stables and “getting her hands dirty.”