On Saturday evening, Kaley Cuoco made her way to LA's Vibiana to celebrate the 200th episode of her show, The Big Bang Theory. Kaley kept things ***y in a low-cut black dress and showed off her Quirky Side while posing for photos with comic book writer, Stan Lee, who once guest starred in the CBS sitcom. Also in attendance were Kaley's costars, including Johnny Galecki, Mayim Bialik, and Simon Helberg. That same day, Kaley took to Instagram to document her night, sharing a handful of fun snaps, including one where she thanked her followers for their support, writing, "200 episodes in the books! Thank you to all that made this dream a reality."