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A 2008 film based on a 1938 book by Winifred Watson and starring Frances [=McDormand=], Creator/AmyAdams, Lee Pace and [[Creator/CiaranHinds Ciarán Hinds]]. It is set in London, just before the outbreak of the Second World War, and follows a spectacular day in the life of an English nanny.

Miss Guinevere Pettigrew is a middle-aged, old-fashioned governess with a penchant for getting fired. After she is kicked out of a household for the fourth time, she is left on the streets. Her placement agency refuses to give her more work, and in desperation she steals the address of a lady who has asked the agency to "send someone over." She arrives at the flat, but soon realizes the young woman, club singer and aspiring actress Delysia Lafosse, doesn't want a nanny-- she wants a ''social secretary''.

Miss Pettigrew also discovers Delysia is romantically involved with three men: club owner Nick, her employer and owner of the flat she lives in; 19-year-old Philip, who is producing a West End play Delysia wants the lead role in; and poor pianist Michael, Delysia's accompanist and friend, who has just been released from prison and wants to marry her. As Pettigrew maneuvers through the world of London high-society, she encounters cunning boutique owner Edythe and her fiancé, the charming lingerie designer Joe Blomfield. Over the course of one whirlwind day, Miss Pettigrew helps Delysia sort out her troubled life, all while managing to solve a few problems in her own.

A lighthearted period comedy featuring great actors, sharp dialogue, and beautiful music, ''Miss Pettigrew Lives for a Day'' is a sweet little movie that manages to be romantic and comedic without being a Romantic-Comedy. Amy Adams is hilarious as Delysia, and Miss Pettigrew's gentle character development is a treat to watch.

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!!This film provides examples of:

* {{Bitch In Sheeps Clothing}}: Edythe.
* BritishStuffiness: Miss Pettigrew, although it has more to do with the fact she was a vicar's daughter, and she grows out of it somewhat. Averted with most of the other British characters.
* DanceOfRomance: Between Miss Pettigrew and Joe Blomfield:
-->'''Joe''': Am I making you... uncomfortable?
-->'''Miss Pettigrew''': This is the most comfortable I've been all day.
* DevelopmentHell: The book it was based on came out in 1938. The movie rights were sold in 1939. The movie came out in ''2008''.
* TheDitz: Delysia is... not the brightest bulb.
* DrowningMySorrows: Part of how Michael wound up in prison. The other part was drunkenly trying to get Delysia a new diamond ring from ''the Tower of London''.
* ExtremelyShortTimeSpan: The movie takes place over the course of one day.
* FakeBrit: Frances [=McDormand=] as Miss Pettigrew and Lee Pace as Michael.
* FashionShow: Miss Pettigrew meets Joe at one... [[RunningGag and drops her food on his shoe]].
* FieryRedhead: Delysia isn't hotblooded, but she is outspoken, passionate, and wild.
* GoodAdulteryBadAdultery: Delysia is introduced sleeping with one man, in the flat of another man, while being pursued for marriage by a third man. She's the heroine. (Overall, though, her promiscuity is viewed negatively, as she's doing it for selfish and manipulative reasons.)
* HiddenDepths: Delysia seems like your typical flighty ditz, but she realizes her hold on her glamourous lifestyle is tenuous at best, and that she could lose everything and be out on the street if she says or does the wrong thing. Miss Pettigrew seems to be your average fuddy-duddy old-fashioned lady, but she was once engaged to a man who died in WWI and never quite got over it.
* HypocriticalHumor: Delysia, on the subject of men suspecting women of having affairs: "Men can be so untrusting! I have no idea why."
* [[ICantDance I Can't Dance]]: Miss Pettigrew tries this excuse when Joe asks her to dance. It doesn't work.
* InvulnerableKnuckles: Lampshaded when Michael socks Nick in the jaw: "I'm a pianist, dammit! This could ruin me!"
* TheMakeover: Miss Pettigrew again, with the help of Edythe's boutique.
* MakeoverMontage: Wherein Miss Pettigrew gets a mud facial and eats the cucumbers on her eyes.
* ManicPixieDreamGirl: Well, Delysia ''is'' played by Creator/AmyAdams...
** Except in her case, it's made clear that the character realizes her lifestyle is unsustainable, and that the public persona is largely a mask she uses to emotionally manipulate others. If anything, Miss Pettigrew is the character who helps others find their truest desires. Through calm, heart-to-heart discussions. The film has been called a female buddy flick for a reason.
* {{Matchmaker Crush}}: Miss Pettigrew is blackmailed by Edythe into helping her reconcile with Joe, even though Miss P. is falling for him herself.
* MistakenIdentity: Miss Pettigrew thinks Delysia wants a nanny for her child; when she goes to wake up Phil, she discovers he's... "rather a bigger boy than I imagined."
** [[IThoughtItMeant "Oh, you]] [[DoubleEntendre noticed?"]]
* NakedInMink / PrettyInMink: Delysia wears a sable coat with nothing underneath, and loves the feel of fur on the skin.
* NakedPeopleAreFunny: When Miss Pettigrew goes to wake up young Philip, she finds Young Philip in plain view.
* NostalgiaAintLikeItUsedToBe: The movie is something of a pastiche of the 1930s ScrewballComedy, but it's set in 1939 and the threat of war looms over the whole piece, giving it a slightly darker angle.
* OohMeAccentsSlipping: Lee Pace can't quite manage to maintain a consistent English accent. Frances [=McDormand=] fares much better.
* PennyAmongDiamonds: Miss Pettigrew, a homeless nanny pretending to be a high-class social secretary
* PrincessForADay: Miss Pettigrew.
* RichSuitorPoorSuitor: More Rich Suitor, Rich Suitor, Poor Suitor; the choice is between club owner Nick, theatre producer Philip, and poor pianist Michael.
* RomanticTwoGirlFriendship: Guinevere and Delysia. "You are ''beautiful'' ... "
* RunningGag: Miss Pettigrew is forever trying to get something to eat, and failing.
* SavvyGuyEnergeticGirl
* ScrewballComedy: Definitely played with: the necessary stock characters from screwball are there, but they don't do what the genre calls for. At all. Though it's definitely played for laughs rather than drama.
* SheCleansUpNicely: Delysia helps Guinevere to a makeover as a thank you.
* ShipperOnDeck: Miss Pettigrew ships Michael/Delysia; in her words, "He is ''magnificent!''"
* StageNames: Delysia Lafosse, glamorous American singer and actress. Her real name is Sarah Grubb.
* SuspiciouslyAproposMusic: "If I Didn't Care"; justified because it was chosen by Michael specifically to reflect the relationship between him and Delysia.
* UpperClassTwit: Phil.
* UptightLovesWild: This is a key point of the movie, minus the romantic angle.
* WoundedGazelleGambit: Delysia pulls several in rapid succession after Phillip leaves the flat; first telling Miss Pettigrew that Nick Calderelli is a snake and that she needs rescuing, then acting upset that Nick suspects (correctly) that she's cheating on him and putting on some impressive crocodile tears, then convincing Miss Pettigrew to stay with yet another...
-->'''Delysia:''' I was the desperate one. I'm always desperate. Think of what would have happened if you hadn't been here!
-->'''Miss Pettigrew:''' I shudder to think what goes on when I'm not here.
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