reunion in Los Angeles.The best part? It appears that we're going to get to see what came of the Plastics' meetup, which reports was for a Pepsi commercial. On October 6, the Mean Girls stars who played Cady Heron, Karen Smith, and Gretchen Wieners in the 2004 high school comedy were photographed smiling on set. was seen in a silky pink robe in photos obtained by TMZ, while and wore pink dresses in snaps .