Watch Mean Girls (2004) HD Full Movie Free on SolarMovie. Watch Mean Girls (2004) online free. Cady Heron is a hit with The Plastics, the A-list girl clique at her new school, until she makes the...Cady Heron is a hit with The Plastics, the A-list girl clique at her new school, until she makes the mistake of falling for Aaron Samuels, the ex-boyfriend of alpha Plastic Regina George.