Mayim Bialik, Kaley Cuoco, Melissa Rauch Mayim Bialik, Kaley Cuoco, Melissa Rauch

The Big Bang Theory has some pretty cute — and uncanny — little stars.

Remember when Penny (Kaley Cuoco-Sweeting), Amy (Mayim Bialik) and Bernadette (Melissa Rauch) accidentally went to a mother-daughter tea party last season? In this exclusive video from the Season 7 DVD, the actresses found their mini-mes among the extras and dressed them up as Li'l Penny, Amy and Bernadette — right down to the glasses!

Fall TV: Must-see new shows

"The three of them ended up looking, like, literally our mini-mes from 20 years [coughs] a couple years ago," Cuoco-Sweeting says.Watch the video below to see mini-Penny, -Amy and -Bernadette get into character. The Big Bang Theory Season 7 DVD is out on Tuesday. Season 8 premieres Monday, Sept. 22 at 8/7c on CBS.(Full disclosure: is owned by CBS.)