Stylemint is here! Mary-Kate and Ashley Olsen's new online-only T-shirt line debuted on Friday, and it's ready for shopping! To get you amped to see (and shop) the twins' new super-soft line of Ts on Stylemint.com, the Olsens shared an exclusive new behind-the-scenes video of their photo shoot with InStyle (above). Shot by Terry Richardson, watch the video above to get a glimpse of MK and A picking out outfits, modeling the shirts, and posing together to show off their new collection. Then, head over to Stylemint.com to check out the pieces, each for $30!