This has been claimed all over Russian language newsfeeds, I think originating at this link:
Обратив внимание на форму женской груди, каждый мужчина может предсказать, что ожидает его, если он свяжет свою жизнь с той или иной женщиной.
К такому выводу пришли немецкие ученые, проведя специальные исследования в этой области.By noting the shape of the female breast, every man can predict what awaits him if he will tie his life to a specific woman (the article context means, her personality)
This is the conclusion the German scientists, conducting special studies in this area.
The article goes on matching the breast shape to personality - I'm a bit hesitant to post specific details in the interests of keeping the site PG-13.
It didn't bother specifying what the study being described is.