The Mika set from Reformation features a chic short-sleeved top paired with a matching mini skirt for a fresh, coordinated look. The Mika set from Reformation features a chic short-sleeved top paired with a matching mini skirt for a fresh, coordinated look. Founded in 2009, Reformation is a revolutionary lifestyle brand combining stylish, vintage-inspired designs with sustainable practices. With each limited-edition collection, the LA-based brand empowers individuals who want to look beautiful and live sustainably.