Gretchen's father was made very rich after inventing the Toaster Strudel, and as a consequence of so much money, Gretchen became very spoiled. She is extremely beautiful, but she is quite insecure and she obeys Regina like she was her master.
And for last but not least, Karen Smith, she is a gorgeous young girl that is quite aloof. She is regarded as a bimbo, as her attitudes and sayings are quite dim-witted, to the point of being comedic. She also is said to be very promiscuous.
The three girls together are considered the most beautiful, glamorous and overall hottest girls in North Shore High School.Cady Heron is initiated into the Plastics, then working under a scheme with Janis Ian, takes down North Shore's queen bee; Regina George. Cady becomes shiny hard plastic then betrays her real friends.
The Plastics break-up upon the reveal of the Burn Book. Damian Leigh, before the school year is out, identifies a group of girls as "Junior Plastics". Much like their predecessors they too were nearly hit by a bus in the front of the school.