Thanks to Storm Shadow Crew on YouTube and the sharp eyes of frostingpeetaswounds on Tumblr, there is video available of hundreds of Capitol extras on the way to the set of The Hunger Games: Mockingjay Part 2 in Paris.
Based on the footage in the video, it would seem that the people guessing that the teal jacket Jennifer Lawrence is wearing is actually her Capitol disguise from Tigris’ shop were correct. The mob of extras walking along don’t have any reaction to Jennifer and Liam exiting the building, which would lend to the assumption that they’re “acting” and therefore this would be when Gale and Katniss enter the streets of the Capitol under disguise.
Later, you can see Jennifer and Liam sitting down in what appears to be a break between takes and you can see Katniss’ black pants and parts of her costume on her hand, but not much else.
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