A very good friend of mine wrote for the late TBS hit, Glory Daze. It was an hour-long comedy that followed a group of lovable frat pledges in the fall of 1986. Tim Meadows was in it. It was awesome.
The preppie pledge had a preppie girlfriend played by Natalie Dreyfuss. Her character was prim and uptight, perhaps the antithesis of Serena van der Woodsen, but Natalie Dreyfuss the actress looks just like Blake Lively. Also, her character acted as if Serena and Blair had a baby together and the baby got Serena's looks and Blair's sphincter tension. Congratulations, you two!