Penny's real surname remained a mystery when The Big Bang Theory ended, but as it turns out, the show has already secretly revealed it very early on. As the only female character from the original sitcom, Kaley Cuoco's character appeared in all twelve seasons of the CBS popular show. Although she seemed to stand out from her nerdy group of friends, she went through tremendous personal growth throughout those years, and in her own way, she truly became one of them.
After moving to California as
Read more on screenrant.com