There's a pretty famous thing on "The Big Bang Theory" regarding Penny's last name — which is to say, she doesn't have one.

Prior to The Big Bang Theory's official premiere, its unaired pilot had a significantly different cast of characters aside from Leonard and Sheldon.Penny, Raj, and Howard are missing, and in their ...

The Big Bang Theory writers did a great job, over the course of 12 seasons, of crafting immersive backstories for each of the main characters. By the time the show premiered its series finale ...

Quigley gave us the inside scoop on the signature styles of Penny, Amy and Bernadette when she took EW’s own Adam B. Vary on a guided tour of the Big Bang wardrobe closet.

‘The Big Bang Theory’ writers insisted Penny didn’t have a name It took fans a bit to figure out that one of the show’s main leads was lacking a surname. Once they figured it out, they set ...

Cuoco’s Penny didn’t enter “The Big Bang Theory” cast until Lorre penned a “do-over” pilot after shooting a failed first version that never aired.

STORY: ‘Big Bang Theory’: Penny’s Blossoming Career, Amy’s Long-Term Plan and 8 More Season 6 Spoilers “She’s an aspiring actress and she’s been here for four or five years now and ...

PHOTOS: ‘The Big Bang Theory’ Celebrates 100 Episodes “I don’t know if they’re made for each other, but I think that Leonard and Penny help make each other into the people that they’d ...

Kaley Cuoco spent over a decade playing everyone’s favorite girl-next-door Penny on The Big Bang Theory.Over the CBS sitcom's 11-season run, viewers saw Penny evolve from Leonard and Sheldon’s ...

“The Big Bang Theory” co-creator Chuck Lorre says Kaley Cuoco’s character Penny took a few seasons to fully understand. “It’s a cliched character: the dumb blonde, and we missed it ...