It's different clips mashed together. If you look at 1:53 for the reveal they leave the shorts on her, but then at 1:55 the shorts are off, and again at 2:20 the shorts are back.
@@AdcrofromTikTokIts bc during dlyh brittneys shorts fell off. she had to get another short but it has chains on the side. so thats why they only remove the top