* AlternateCharacterInterpretation: The remake's "11 years and 9 months later" caption gives the implication that Elizabeth got pregnant very quickly after meeting Nick - suggesting that may have been the reason they got married in the first place.
* AuthorsSavingThrow:
** The relationship between the parents in the Hayley Mills version seems a little abusive by modern standards. In the remake, the parents both make mentions of having stupid tempers when they were younger - but they've clearly matured and they talk through their issues a bit more rationally.
** Hayley Mills's American accent is just about passable in the original. The remake makes one of the twins British, and Lindsay Lohan's accent is much more decent.
** Some viewers of the original are a little shocked at the drastic haircut that Susan has to get - from just past her shoulders to completely short. The remake lessens it to Annie just having her hair cut from elbow length to shoulder length.
* DesignatedHero:
** The parents. In both movies, they were people who got divorced and, to make it easier on ''themselves'', decided that each would only get custody of one child and never mention the existence of their sibling.
** Hallie in the remake comes quite close as well. She initiates all the arguments (pulling Annie into the water, stealing her clothes), behaves like a spoiled brat in the isolation cabin and forces Annie to deal with all the drama surrounding Nick's relationship with Meredith because she wants to spend more time with her mother. And there's the fact that Annie is forced to both cut her hair ''and'' get her ears pierced, all Hallie has to do is change her accent.
* EarWorm: The original movie has "The Parent Trap" and "Let's Get Together," two of the first songs that Music/TheShermanBrothers wrote for a Disney movie.
* FanDisservice[=/=]FetishRetardant: The appearance of the Butler in the LindsayLohan version, wearing a Speedo. To be fair, he's ''not'' fat or ugly. It's just that for some Americans, there's something uncomfortable about a middle-aged or elderly adult in bathing suit typically worn by the younger generation.
* {{Fanon}}: Some fans like the idea of Vicki in the remake actually being the same Vicki from the original, as a way of tying the two films together. The fact that she's aware of Meredith marrying Nick for his money lends some merit to the notion.
* FirstInstallmentWins:
** The Hayley Mills version had three sequels, the last one coming just nine years before the Lindsay Lohan version. Anyone remember them? The third and fourth got hit especially hard; ''The Parent Trap II'' at least became bundled with the original on DVD.
** On the other hand, whether you're more familiar with the Hayley Mills version or the Lindsay Lohan version will probably depend a lot on how old you are.
* FridgeHorror: Exactly how many relatives were aware of what the parents had done and were forced to keep it a secret? Even the servants and staff knew and had to keep quiet about it.
* HarsherInHindsight: On the red carpet for this film, the then-twelve-year-old Lindsay Lohan was asked about doing more movies. She responded that she might in the future, but she wanted to have a normal childhood for a while. At the time, a relief that she wouldn't become a FormerChildStar. Nowadays, she fell headlong into the trap and is one of the most famous examples of her generation.
* HilariousInHindsight:
** Dennis Quaid plays a father who just got divorced who's kids want him to get back with his wife. Seven years later, Quaid would star in the 2005 remake of ''Film/YoursMineAndOurs'' where he plays a widowed Coast Guard with 8 kids who marries a widowed handbag designer (Rene Russo) with 10 kids. But this time, the kids' goal in that film is the ''total opposite'' of the twins' goal--They want the parents to ''split up!''
** When Lohan and Richardson are crossing the street "Abbey Road" style, parked nearby is a white, classic VW Beetle. Lohan's final film for Disney (so far) became ''Film/HerbieFullyLoaded''.
** Annie and Hallie being "punished until the end of the century" is funny when you realize that the movie takes place in 1998.
* LoveToHate: Both Joanna Barnes and Elaine Hendrix make their respective evil girlfriends so hilariously over the top that they're usually some of the highlights of their respective movies.
* SheReallyCanAct: Inverted, as this is Lindsay Lohan's first film. But it's still a clear indicator that she definitely has some acting talent, especially helping distinguish between each twin, and each one pretending to be the other.
* ValuesDissonance:
** The idea that parents who broke up in a divorce should get back together, no matter how much they fight is odd to 21st century society.
** Averted in the remake. The parents never actually fought and were visibly still very much in love with each other upon reunion. It's mentioned that the main reason for the divorce was "we were both young, we both had stupid tempers" as well as Elizabeth technically not wanting to leave -- she expected Nick to stop her so they could make up but Nick believed she wanted to leave. Now that they've matured and sorted their issues out, they might fare better.
* WhatAnIdiot: Granted, everything had already gone to hell by that point anyway, but Meredith ranting she planned to ship Hallie and Annie off to Switzerland and telling Nick "It's me or them, take your pick" comes across as galactically stupid since they're, you know, his ''daughters,'' one of whom he clearly loves and dotes on, and the other who he hasn't gotten to see in years. Did she really think he was going to pick ''her'' in that ultimatum?
** Yeah, she did. That's the way narcissistic people roll.
----