Blair's full birth name, which is said several times throughout the series, is Blair Cornelia Waldorf. She doesn't alter her name even after her parents separate and her mother remarries.

Meanwhile, her best frenemy, Blair Waldorf — though she was a popular, straight-A student with an Ivy League education — was always portrayed as insecure about the troubled golden girl.

We're taking a look at the 10 best style moments from Blair Waldorf and Serena Van der Woodsen on Gossip Girl. More from The Hollywood Reporter ...

King Kylie appeared to be vying for Constance Billard’s queen bee crown, posing in a cherry red Y2K accessory that could have been taken straight from Blair Waldorf's closet. As part of her ...

Ready to put on your best Blair Waldorf headband and channel your inner Serena van der Woodsen? If you’re a die-hard Gossip ...