First, the study you referenced just shows that a sample of women were less likely to get interviews with their photo. From there it's just the authors throwing

First, the study you referenced just shows that a sample of women were less likely to get interviews with their photo. From there it's just the authors throwing out guesses for their findings. Maybe HR workers are jealous, or maybe they're worried that attractive young women will cause drama at work. Based on this study, we have no idea. Even if the guess that "female HR workers don't want to hire other pretty females" is correct, you have no idea whether the same would be true were the roles reversed. Would all-male HR departments be less likely to call attractive men for interviews? It's very possible. The study you cite in no way supports the authors claim that women gossip more.