'Big Bang Theory' season 8 air date and spoilers might reveal the identity of Penny's mom who might be introduced in the upcoming season following Leonard and Penny's engagement. As for Kaley Cuoco, she sees 'Friends' star Lisa Kudrow as Penny's mother.

"I know, I've been waiting! I don't know what they're going to do, but I have always thought -- and I hope this doesn't offend her because I know she's super young, though we know Penny's mom got knocked up very early -- that Lisa Kudrow would be so perfect. I've said that for years. I think it would be hilarious, plus I'm a huge fan of hers, so it's a selfish wish," she told TV Line.

Cuoco likewise thinks that 'Big Bang Theory' season 8 air date and spoilers will portray Leonard as a "groomzilla." As per the blonde beauty, it will be funnier if Leonard will carry the tasks of planning the wedding: "Penny is so aloof, she'd be a lot more easy-going than Leonard."

Aside from the introduction of Penny's mother, it will similarly be interesting to know about the bride-to-be's brother. In the 'Big Bang Theory' season 7 finale, Leonard finds out that they might have to wait for Penny's brother to come out of jail before tying the knot.

During the wrap-up party of 'Big Bang Theory' season 7, Cuoco stunned producers when she arrived sporting a pixie haircut. Does it mean that she will also sport the new hairdo in the upcoming season?

"I'm hoping Penny will keep the haircut, that's my goal. The finale wasn't a 'To Be Continued,' so I don't see any problem with it. People change, people get haircuts, so I think this is a realistic move for Penny. Fingers crossed!" she told TV Line.

'Big Bang Theory' season 8 air date will be in September. The hit CBS comedy has likewise been renewed for three more seasons.