You may not have known this, but it's National Tartan Day. What is that, you ask? Well, it's basically an opportunity to honor the many accomplishments of Scottish-Americans. So in celebration, we've decided to call out the iconic tartan pattern — and who better to rep that than Alicia Silverstone and Stacey Dash (as Cher Horowitz and Dionne Davenport) in Clueless? Plus, ASOS Stylist Gamze Guhl shows us how to rock the combo in 2015. As if these lewks would go out of style.