VIDEO : Sarah Michelle Gellar Celebrates 'Buffy the Vampire Slayer'

Saturday marks the first ?Buffy Slay Day.? The day celebrates the 21st anniversary of the seminal television series Buffy the Vampire Slayer. The show?s star, Sarah Michelle Gellar, is participating in the celebration by showing off some rare photos from the show.
Gellar shared a gallery of behind-the-scenes photos from the set, during filming, and past reunions with co-stars to her Instagram feed. They offer a look at what it was like to be a part of the fan-favorite series.