The Fifty Shades film series has never been afraid to show more than a little skin, but that doesn't mean there aren't some things the actors have been able to keep to themselves, though sometimes that's taken some work. Dakota Johnson says that in order to keep the parts of her that were not for public view covered, she wore a sort of thong around her waist, though it required some extra strong adhesive because it kept coming off during filming. According to Johnson...
Sex on screen, in general, can probably be referred to as "fucking bizarre," as Dakota Johnson puts it to Marie Claire. You're involved in one of the most intimate acts imaginable, or you're pretending to be, while a bunch of crew people stand around watching, and filming, the entire experience. Wanting at least the bare minimum (puns), of covering so you don't feel completely naked is understandable.
The fact that the adhesive on the pastie would wear out seems like a fairly significant design flaw. It's understandable that the person wearing it might get sweaty, but what else is the thing actually designed to do? Shouldn't it be built specifically to withstand that? If you need to superglue anything to your body, there's clearly something going wrong.
Dakota Johnson's co-star Jamie Dornan had a similar device around him to keep everything covered. Johnson said it was quite unsexy, and considering it's likely the same could be said about her, it sort of defeats the entire point of the Fifty Shades movies when you discover that making them wasn't nearly as exciting as it appeared.
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While it's clear that filming the Fifty Shades of Grey series was a struggle in many ways, Dakota Johnson and Jamie Dornan can breathe a sigh of relief now that the ordeal is over. The trilogy of books has now become a trilogy of films, and it seems unlikely that there will be more of them, and even more unlikely that the two leads would return even if there was interest in another. Hopefully, this means the pair can go back to wearing regular clothes in front of the camera and do without the superglue.