Guest Star: Piper Mackenzie Harris

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  The Contractual Obligation Implementation
  Season 6, Episode 18 - Aired March 7, 2013

  Leonard, Sheldon and Howard visit Howard's old school to speak to junior high girls about careers in science. Meanwhile, Raj plans his first formal date with Lucy, while the girls visit Disneyland and dress up as Disney princesses.

  Appeared as Girl #1