The Partridge Family Not with My Sister, You Don't! (1970–1974) Online
- Original Title :
- Not with My Sister, You Donu0027t!
- Genre :
- TV Episode / Comedy / Family / Music
- Year :
- 1970–1974
- Directror :
- Mel Swope
- Cast :
- Shirley Jones,David Cassidy,Susan Dey
- Writer :
- Dale McRaven,Bernard Slade
- Type :
- TV Episode
- Time :
- 30min
- Rating :
- 7.2/10
Lester is a new transfer to San Pueblo High and he already is beginning to develop a reputation as quite the ladies man. However, Keith panics when he hears that Laurie has accepted a date with the Lothario. After Danny plants the seed in his head that he might try something with Laurie, Keith goes after them with Danny in tow to make sure his sister's reputation remains intact, even though he promised Shirley he would butt out. Unfortunately, Keith's efforts meet with disastrous results as he winds up humiliating his sister. Now he must find a way to make it up to her and not be so overprotective.
| Episode cast overview: | |||
 | Shirley Jones | - | Shirley Partridge |
 | David Cassidy | - | Keith Partridge |
 | Susan Dey | - | Laurie Partridge |
 | Danny Bonaduce | - | Danny Partridge |
 | Jeremy Gelbwaks | - | Christopher 'Chris' Partridge |
 | Suzanne Crough | - | Tracy Partridge |
 | Dave Madden | - | Reuben Kincaid |
 | Michael Ontkean | - | Lester Braddock |
 | Michael Rupert | - | Bob (as Mike Rupert) |
 | Jeremy Burke | - | Archie |
| Cindy Crosby | - | Doris |
The title was inspired by the film Not with My Wife, You Don't! (1966).