No, Sarah and Jake are not twins in Cheaper by the Dozen.
In the film, Sarah Baker is portrayed as the older sister to Jake Baker. They are distinct siblings within the large Baker family, each with their own individual age and place in the family's extensive birth order, rather than sharing the same birth date.
Interestingly, while Sarah is depicted as Jake's older sister in the movie, the actors who play them have a different real-life age dynamic. Jacob Smith, who plays Jake, is actually three years older than Alyson Stoner, who plays Sarah. This common practice in filmmaking allows for flexibility in casting to best fit the characters' personalities and on-screen relationships, even if real-life ages don't perfectly align with the fictional birth order.
The Baker family is famously large, consisting of twelve children, each with a unique identity and role within the household. The children, in order of age from oldest to youngest, are:
- Nora Baker
- Charlie Baker
- Lorraine Baker
- Henry Baker
- Sarah Baker
- Jake Baker
- Mark Baker
- Jessica Baker
- Kim Baker
- Mike Baker
- Kyle Baker
- Nigel Baker
This extensive list highlights that Sarah and Jake are individual siblings within the family, not twins.