Have you ever done a double take while watching a movie, convinced you just saw someone famous? Festive films are packed with surprises, and some of the best come in the form of unexpected celebrity cameos.

Whether it's a blink-and-you-miss-it moment or a subtle nod to stardom, these appearances often leave viewers scratching their heads or reaching for the rewind button.

Some cameos are planned to perfection, while others slip under the radar, uncredited and unnoticed until eagle-eyed fans spot them.

And it's not just actors making surprise appearances-reality stars, musicians, and even politicians have found their way into holiday classics. These brief but memorable moments add an extra layer of fun to the festive season.

From unexpected music legends to US presidents sneaking onto the silver screen, we're diving into the most surprising celebrity Christmas cameos you probably forgot - or never even realised - existed.

Mariah Carey takes centre stage in A Christmas Melody, not just as the film's director but also as Melissa, a snobby PTA president with a sharp tongue. Her character stirs up drama for the struggling single mom protagonist, all while showcasing Mariah's signature diva flair. The Hallmark movie, featuring plenty of festive vibes and even a performance of Carey's iconic All I Want For Christmas Is You, cements her title as the ultimate Queen of Christmas. " data-has-syndication-rights="1" data-portal-copyright="Getty" data-licensor-name="Getty" /> Dolly Parton lights up the screen in Christmas at Dollywood (2019) with a cameo as herself, playing the ultimate hostess at her iconic Tennessee theme park. The Queen of Country steps in to sprinkle her signature charm and holiday cheer, helping a struggling event planner find her footing-and some Christmas magic. With a twinkle in her eye and a few wise words, Dolly's appearance steals the show, reminding everyone why she's a national treasure and the perfect fit for a festive flick. " data-has-syndication-rights="1" data-portal-copyright="Getty" data-licensor-name="Getty" /> Donald Trump makes an unforgettable cameo in Home Alone 2: Lost in New York, appearing as himself in the iconic Plaza Hotel. In a brief scene, he gives young Kevin directions to the lobby, delivering his line with signature confidence. At the time, Trump owned the hotel, and according to the film's director, Chris Columbus, his cameo was part of the deal to use the location. While short, the moment has become one of the most talked-about celebrity cameos in Christmas movie history, sparking debates and plenty of memes over the years. " data-has-syndication-rights="1" data-portal-copyright="20th Century Studios" data-licensor-name="20th Century Studios" />