Continuity mistake: When Sophie is finally dressed for her wedding, the gauzey material is predominately over her right shoulder/breast. Next shot it is over her left. When she gets on the donkey, it is completely off her right side and her bra shows.

Mamma Mia! (2008)
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Directed by: Phyllida Lloyd
Starring: Amanda Seyfried, Christine Baranski, Colin Firth, Julie Walters, Meryl Streep, Pierce Brosnan, Stellan Skarsgard
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Trivia: While neither the stage show nor the film reveals who Sophie's real father is, there is an official answer. According to Catherine Johnson and Phyllida Lloyd, Sophie's real father is Bill. Bill's character was Australian in the original stage production, but in the film he became a Swede instead, and he's played by Swedish actor Stellan Skarsgård. This means the film's Sophie has her roots in Sweden - just like "Mamma Mia!"
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Answer: If you checked the trivia section, you would have your answer, but here it goes...."While neither the stage show nor the film reveals who Sophie's real father is, there is an official answer. According to Catherine Johnson and Phyllida Lloyd, Sophie's real father is Bill. Bill's character was Australian in the original stage production, but in the film he became a Swede instead, and he's played by Swedish actor Stellan Skarsgård."
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