adjective. used to describe clothing that would be worn by the character Blair Waldorf from the show gossip girl. characterized by preppy
expensive looking ruffly shirts, classy skirts, and school uniform attire. Accessories could also be described this way such as headbands and pearls.
2) This could also desicribe bitchy, snobby, witty comments.
1)"That blazer and pencil skirt outfit is so blair waldorf"
2) "Awww...too bad you missed the college assembly. Not that it matters. Brown doesn't offer degrees in slut