![Big Bang Theory is actually revealing Penny's mum this season - but which TV legend has bagged the role? Big Bang Theory is actually revealing Penny's mum this season - but which TV legend has bagged the role?](https://hips.hearstapps.com/digitalspyuk.cdnds.net/16/29/1469213839-penny1.jpg?crop=1xw:0.843328335832084xh;center,top&resize=1200:*)
Big Bang Theory is actually revealing Penny's mum this season - but which TV legend has bagged the role?
![Kaley Cuoco Sweetly Reacts to Katey Sagal's 'Big Bang Theory' Casting: 'Once My TV Mom, Always My TV Mom' | Entertainment Tonight Kaley Cuoco Sweetly Reacts to Katey Sagal's 'Big Bang Theory' Casting: 'Once My TV Mom, Always My TV Mom' | Entertainment Tonight](https://www.etonline.com/sites/default/files/styles/video_1920x1080/public/images/2016-07/et_072216_BigBangTheory720.jpg?itok=4JDUtUb7)
Kaley Cuoco Sweetly Reacts to Katey Sagal's 'Big Bang Theory' Casting: 'Once My TV Mom, Always My TV Mom' | Entertainment Tonight
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The Big Bang Theory Casts Penny's Mother and Brother - Parade: Entertainment, Recipes, Health, Life, Holidays
![The Big Bang Theory Season 10 Spoilers: arrival of Bernadette's baby in season 10; Katey Sagal stars as Penny's mother The Big Bang Theory Season 10 Spoilers: arrival of Bernadette's baby in season 10; Katey Sagal stars as Penny's mother](https://christiantoday-4cf9.kxcdn.com/en/full/30481/the-big-bang-theory-season-9.jpg)
The Big Bang Theory Season 10 Spoilers: arrival of Bernadette's baby in season 10; Katey Sagal stars as Penny's mother
![The Big Bang Theory Season 10: Katey Sagal and Jack McBrayer Will Play Kaley Cuoco's Mom and Brother | Glamour The Big Bang Theory Season 10: Katey Sagal and Jack McBrayer Will Play Kaley Cuoco's Mom and Brother | Glamour](https://media.glamour.com/photos/5732d25c06097e9758dfaeee/4:3/w_1776,h_1332,c_limit/108235_WB_2340b.jpg)
The Big Bang Theory Season 10: Katey Sagal and Jack McBrayer Will Play Kaley Cuoco's Mom and Brother | Glamour
![The Big Bang Theory Season 10: Katey Sagal and Jack McBrayer Will Play Kaley Cuoco's Mom and Brother | Glamour The Big Bang Theory Season 10: Katey Sagal and Jack McBrayer Will Play Kaley Cuoco's Mom and Brother | Glamour](https://media.glamour.com/photos/57926354d4c322cc5c4a6808/master/w_1600%2Cc_limit/kaley-cuoco-katey-sagal-mom-daughter-big-bang-theory-8-simple-rules.jpg)