I have made my comment...it was an ACT! Jesus H. Fvcking Christ on a popsicle stick you're dense!
Dense? I'm actually posing more theories here, and your the one not even commenting or even considering the opinions I bring up. Dense?
And, for the bra, I've seen the close-up HDTV screen caps. There isn't a shred of a thread leftover.
Where were you looking? on the piece in Justin's hand? or from Janet's wardrobe? Neither would show and threads if it were to break. It won't be like threads from a T-shirt, ever tried ripping the rubber strap for your Jockey's? There won't be any long threads since they are made of rubber. Besides, bras are like 10x more thin and fragile, especially the bikini tops. The exposed part of the piece of bra/clothes in Justin's hand is actually the top part of her bra where the red lace was, not at the point of where it broke. So you won't see it. And if you were looking at her breast, I mentioned it before...