Whilst ruling the metaphorical Upper East Side your outfits comprised of plaid, a power coat and the occasional matching twinset. But every Gossip Girl fan will know the true mark of a Blair ...

While Leighton Meester’s Blair Waldorf was ... worn in the show were outfits that were way ahead of their time or timeless and it was devastating when Gossip Girl ended and we had to say goodbye ...

During the first season of Gossip Girl, Serena ended up sleeping ... There was also another time when modeling for Blair's mother, Eleanor Waldorf's clothing line, became a bone of contention ...

The new Gossip Girl reboot is an update ... is also reminiscent of those Blair wore as her signature piece throughout the CW series. Gevinson's first outfit — a blazer, navy-and-cream striped ...

Penn Badgley is letting Gossip Girl fans in on a little secret ... referring to the lavish Manhattan penthouse where Blair Waldorf (Leighton Meester) lived in the show. Related: Why Penn ...

Any noughties teen worth their salt will remember Gossip ... Blair Waldorf, Penn Badgley, who played lost soul Dan Humphrey, and, of course, Blake Lively, who played ultimate cool-girl Serena ...