While it was said that they were at Yale, the filming was actually done at Columbia University.
This is the third time that Blair has a dream in which she is a character that was played by Audrey Hepburn in a movie. The first time this happened was in Bad News Blair (2007) with Blair being Holly Golightly in Breakfast at Tiffany's (1961), whom she also impersonated in The Blair Bitch Project (2008). This time she is Eliza Doolittle in My Fair Lady (1964). It would happen a fourth time in Seder Anything (2009).
With the exception ofcthe pilot, every title is inspired by a film or book. This one is based on the film 'Heaven Can Wait'.
Blair chides Serena by suggesting that she would choose Lauren Conrad as the person she would most want to meet. At that time, Lauren was mostly known for Laguna Beach: The Real Orange County (2004).