Mamma Mia: Here We Go Again may be raking it in at the box office already, but it seems like writers are getting a little loose with the continuity from the first film.
Although the release comes 10 years after the first in the real world, it's actually only set five years later and flashes back to 25 years before, which is definitely a bit confusing.
During the first movie, Meryl Streep's character Donna is shocked to see her ex Sam Carmichael turning up at her hotel.
She reminisces about the time they met, with Pierce Brosnan's character sporting some very '70s long hair and a big handlebar moustache.
This is only backed up when Sam shows Donna's daughter Sophie a picture of them from way back when, flares and all.
But according to the sequel, when Donna actually meets Sam back in the '70s, he has no hint of the big 'tache and long locks.
So were Donna's memories just a little jumbled up as it's been a whopping 20 years since she last clapped eyes on Sam?
Obviously some things deserve poetic license, such as Cher being cast to play Meryl Streep's mum despite being just three years older than her, but could Jeremy Irvine not have grown out his facial fuzz and worn a wig?
It seems the writers may have overlooked a few more little details when penning the follow-up film.
Mamma Mia 2 also features a big plot hole with Colin Firth's character Harry Bright.
Although he tells Sophie that Donna's guitar was actually a gift from him (that he paid £10 and his Johnny Rotten t-shirt for), it turns out there was no chance Harry could ever give Donna the instrument.
Harry's final scene shows actor Hugh Skinner stranded in Greece after missing the last ferry to the island… complete with a guitar strapped to his back.
Considering he doesn't see her Donna again until he accepts an out-of-the-blue wedding invitation from her for a girl he has never met who may or may not be his daughter, how did the guitar end up with her anyway?
Mamma Mia! Here We Go Again is out now in US and UK cinemas. Book tickets here.
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