For a teenage girl, her bedroom is an opportunity to show off her individual style and changing interests and there is no such thing as a one-size-fits-all solution. If Mean Girls taught us anything, it’s that teen cliques/groups/squads have their own distinct style. It may be the fact that I am now in my 40s and am well out of the “teen scene” but it REALLY feels like teenagers these days have stepped up their style game, right? Real life 13…