The Big Bang Theory series finale pays homage to its pilot episode in an unexpected way. 1 / 7
In the final shot of the series, the gang is back in Apartment 4A eating Chinese food 2 / 7
Penny is seen wearing a aquamarine shirt which is the same shirt she wore in the show's premiere. 3 / 7
Kaley Cuoco sported the same top a few times throughout The Big Bang Theory's 12 years on the air. 4 / 7
But knowing that she's pregnant, fulfilling Leonard's prediction the very first day he met her... 5 / 7
...makes the scene a touching tribute to her and her relationship with her husband. 6 / 7
It's also a great nostalgic tribute for the fans. 7 / 7