At the wedding, Louis slips the wedding ring on the third finger of Marie's left hand. However, at the reception, the wedding ring on the second finger. For the rest of the movie, the ring is either on the second finger or gone.
When Marie Antoinette's brother Emperor Joseph II arrives and before they sit down for tea he tastes a cookie. He is beside the table and starts to walk toward the camera after putting the cookie down. The next shot of him, he is behind the table.
When Marie's party arrive on the grounds of Versailles, the sky is white. When they arrive at the palace itself, the sky is filled with storm clouds.
In the first dressing scene when Marie Antoinette's sister-in-law enters the room, she begins to take her gloves off then the camera changes angles and she begins to take her gloves off again.
When King Louis XV approaches the Dauphin as they await Marie's arrival after the handover, the Dauphin is wearing gloves. When the king presents Marie to the Dauphin moments later, the gloves are gone.
The Comte de Provence (future King Louis XVIII) introduces Louis and Marie to his newborn son, but Provence and his wife never had children. The baby, who is correctly referred to as the duc d'Angoulême, was the son of the Comte d'Artois (future King Charles X). Angoulême later became the husband of Louis and Marie's daughter Madame Royale, and pretender to the throne as Louis XIX.
Marie Antoinette and Louis XVI actually had four children, not three as pictured in the painting in the movie. Their fourth child, Sophie-Beatrix died as a baby as was insinuated by the painting, but at that time they also had three other children. Marie-Therese, Louis-Joseph and Louis-Charles. Louis-Joseph would have just passed away (from tuberculosis) at the time that Versailles was overthrown. In the original painting of Marie Antoinette and her four children Louis-Charles in sitting on her lap, this is not shown in the painting in the movie, nor are the ages of the children accurate historically.
Marie and Louis are shown married on a sunny day. In fact, they were married at night during a rainstorm.
When Marie-Antoinette is celebrating her birthday outside, it is clearly summer, with green grass and flowers. Marie-Antoinette's birthday was in fact in November.
The Royal Family is shown leaving Versailles for the last time in the early morning. In fact, they left after sundown.
At the hand-off, la Comtesse de Noailles tells Marie-Antoinette the tent was built astride the border of French and Austrian soil. This is a true historical event that happened in 1770 near the township of Kehl, in the German province of Baden-Württemberg, which was then part of the Holy Roman (Austrian) Empire. That province has changed ownership several times throughout history, and has been part of the Federal Republic of Germany only since 1953.
Empress Maria Theresa never addressed Marie as "Antoinette or "Antoine", the French versions of Marie's German middle name, Antonia. This is a reasonable English "translation" for the audience's benefit.
There was a pair of pastel blue Converse in the shoe sequence. This was to show that despite the era, her being of royal blood, and immensely tasked with performing her royal duty to continue the royal bloodline, Marie Antoinette was still a teenage girl who was trying to find her place in the world.
As Marie and Louis part as he goes off on a hunt, she begins to walk away, then stands for about 10 seconds. When she walks again, Kirsten Dunst's taped mark can be seen on the floor.
When Marie Antoinette is first presented to the French royal family, Aunt Victoire is holding a pekingese. This breed was unknown in Europe until a hundred years later when British forces successfully invaded China in the Second Opium War and five pekingese belonging to the Chinese Emperor's aunt, who had committed suicide as the British troops advanced on the Forbidden City while the rest of the Imperial family fled, were brought back to Britain, where one was presented to Queen Victoria, who named it Looty.
In the wedding scene Marie Antoinette wears white, which was not worn for brides until the Victorian era. In actuality Marie Antoinette wore blue.
Several times throughout the movie, Marie Antoinette is seen trying on shoes that distinguish between the left and right foot. Shoes were not made as left and right until 1850, over 50 years after she left Versailles.
When Marie Antoinette arrives at Versailles in 1770, both of the front facing façades' have their future, modern looks. In fact, the right one was changed in 1774 and the left in 1815. In 1770 the should still have looked as they did during the reign of Louis XIV. This error therefore, was impossible to avoid.
Several times throughout the film, chandeliers can be seen clearly with electric light bulbs that weren't present in the 18th century. This is because Versailles was 'renovated' in the early 20th century and the candles were replaced with lamps. Therefore the crew had no control over this.
When Marie Antoinette is having her first meal at the palace early in the movie there is a caged cockatoo near where she is dining. This scene is set in 1770, Australian cockatoos were not exported to Europe until after 1788.
Marie was handed over on an island near Kehl on the Rhine river, not in Schuttern, as Mercy informs her. Schuttern was the name of the Abbey where she had spent the night before.
In two "sunrise" scenes, the sun is seen "rising" at the bottom of the palace gardens, which in fact lie to the west (WNW) of the palace.
The palace shown at the beginning of the film after Marie is awakened by a maid drawing open the curtains of her bedroom is neither Hofburg Palace, where she was born, or Schönbrunn Palace, where she was raised, but the Upper Belvedere portion of Belvedere Palace in Vienna, which, although owned by Empress Maria Theresa, was mainly used for social functions.
Around 43:09, after Marie Antoinette and Louis XVI are walking away from a forced encounter with Madame Du Barry, boom mic is visible right above Marie's head as she says "Those are my last words to that woman."
Marie and Louis are sometimes addressed as "Your Majesty" instead of "Your Highness" while Louis' grandfather, the King, is still alive.
At the first dressing, the Comtesse de Noailles introduces the Dauphine to Louise-Marie-Josephine di Savoia as the Comtesse de Provence before she had actually married the Comte de Provence.
Comtesse de Noailles tells Marie that she will exit the tent during the handing-off ceremony as the Dauphine of France. Marie would not become Dauphine until she married Louis.