->''"Sarah, your suspension from lacrosse for excessive force has been lifted, so you're going today... Henry, you have band practice, all right? I cleaned your clarinet. Please don't play with your food in your mouth again. Kim and Jessica, your teacher called and has made a request that you do not correct her in front of the class. Mike, you have show-and-tell today. And please, honey, remember that body parts do not count. Kyle and Nigel, you have a dentist appointment at 3:00, so you're going to work with Dad."''
-->-- Kate Baker (bear in mind this covers barely half the kids)

2003 film starring SteveMartin about him, his wife and their twelve kids. Count 'em, ''twelve''.

VeryLooselyBasedOnATrueStory, in that there was a book & FilmOfTheBook in TheFifties also called ''Cheaper By The Dozen'' which had a family with twelve kids in it. The [[Literature/CheaperByTheDozen original book]] is set in the 1920s and was written by Frank Gilbreth Jr. and Ernestine Gilbreth Carey. That's the only similarity. The Gilbreth children were: Anne, Mary (1906-1912), Ernestine, Martha, Frank Jr., William, Lillian, Frederick, Daniel, John, Robert and Jane. The authors wrote a sequel called ''Belles on Their Toes'' which follows the family after [[spoiler: Frank Gilbreth, Sr's death]]. Mrs. Lillian Gilbreth (the mother) served as an adviser to five American presidents (Hoover, Roosevelt, Eisenhower, Kennedy & Johnson); she and her husband are part of a permanent exhibit at the Smithsonian Institution. As of July 2010, Frederick is the last surviving sibling of the original twelve.

Plotwise, the family packs up and moves an unspecified distance from a small town into the suburbs of Chicago so the Dad can pick up his dream job coaching his old college [[UsefulNotes/AmericanFootball football]] team. The kids are variously disappointed by this, but go along with it anyway because, well, they're not exactly given a choice.

Having left everything they ever knew behind, the family gets another shock - Mom's gonna get her book published! Mom goes on a book tour, leaving the family in her husband's hands for a few days. HilarityEnsues as total chaos erupts. One kid runs away, the family chases him down (leading to a nice YouAreNotAlone moment), Dad realizes what his job has done to his kids and both he and his wife resolve to put family first as the two continue to pursue their careers while living in the new home, their family stronger than ever.

A generally inoffensive family comedy.

A sequel was released, running with basically the same premise but a different plot, which performed much poorer at the box office.

Plays straight pretty much every trope listed under FamilyTropes, SiblingTropes and TheParentTrope.

!!Provides examples of:

* ActuallyPrettyFunny: "You soaked his underpants in meat. That was ''wrong''. Funny! But ''wrong.''"
* BookEnds: The film starts with the mom listing negative or neutral things the family associates with the number twelve ,and the film ends with her listing positive things the family associates with number twelve.
* ChildHater. The eldest child's boyfriend/fiancée is [[DesignatedVillain portrayed]] as this.
* ChildProdigy: Kim and Jessica are very brainy for their age. It doesn't get a lot of attention, though.
* DawsonCasting: The character of Charlie Baker was supposed to be in high school (most likely a junior or senior), but the actor who played him, [[{{Smallville}} Tom Welling]], was 26 when the film was shot and looked like it.
* FoodAndAnimalAttraction: The kids prank the eldest sister's boyfriend by dipping his underclothes in meat and setting the family dog on him.
* InNameOnly: The only similarity it has with the book is that there are twelve kids.
* JerkAss: The guy who picks on Charlie because he thinks hes a yokel and the mother of a neighborhood kid who has nothing but contempt for the Bakers.
* LotsOfLuggage: In the second film, Lorraine fitting this trope is a running gag. Sarah her sister comments on a huge suitcase "This one just for the make-up?"
* MassiveNumberedSiblings: the entire premise.
* MeaningfulEcho: This is how Steve Martin's character finds out where his missing son went. Shortly after moving to Chicago, the son draws him a picture of their old house, which was his[[spoiler: "Favorite place in the world"]] After said son runs away, the police tell Martin that they searched train and bus stations. He claims that his son wouldn't take a train or a bus. His older daughter then says that she always wanted to run away to Chicago, which was her[[spoiler: "Favorite place in the world"]]. This makes him realize exactly where he ran away to.
* NauticalKnockout: This happens to the father.
* NeverTrustATrailer: The trailer portrays this as a nice, comedic family film. While it has its great moments for sure, the film gradually gets more serious as it goes on as Mom's book tour drags on ad Tom is forced to cope with temporarily being a single dad.
* SingleMindedTwins: Both pairs of twins act quite similar to each other. It's more noticeable with Kyle and Nigel, since they're identical.
* {{Tomboy}}: Sarah.
* TheReasonYouSuckSpeech: Charlie delivers one to his dad near the climax of the first film.
* TheThreeCertaintiesInLife: Hank notes, "All I'm saying is families are inevitable; they're like death or taxes."
* TheUnfavorite: Mark is treated like this by his siblings, being called Fedex.