The propensity of really big fake boobs to wobble seems to always quickly cause small bikini tops to be dislodged from their intended covering. Without a restrictive bra like top, they jiggle, bounce, & sway, in one word, wobble, with every step. The bumping and rubbing against each other is the reason Beshine says she wears two around the house, to "protect the boobies" from themselves, because they eventually get sore. It wasn't an real issue when she had a wide cleavage, so I doubt it is a issue for Allegra, who has never exhibited boobie greed, but often wears skimpy tops doomed to fail to cover quickly.