10/03/2014 by Matt Q Happy National ‘Mean Girls’ Day! Dominating Twitter on Friday — October 3rd — is National Mean Girls Day. A celebration of all things related to the 2004 Tina Fey scripted, Lindsay Lohan starring cult hit Mean Girls. READ MORE 90s actors Amy Poehler comedy Lindsay Lohan Mean Girls Mean Girls Appreciation Day movies National Mean Girls Day Tina Fey Comments