Who knew the color red would have women seeing red!

A new study is out and the claws come out, so it says, when women wear the color red. When shown images of women who wore the color crimson, very choice opinions were formed.

"The color of a woman's shirt [affects] how men and women think about her," said Adam Pazda, a social psychologist at the University of Rochester and one of the authors of the study. "Women don't want other women in red near their boyfriends."

So what does the color red indicate to women? Turns out it triggers a sexual threat.

"Women are more likely to say that women in red are less faithful," Pazda explained of the study results. "They do pick up on the [sexually] receptive cue and what that leads to is some sort of defensiveness."

So what's the big deal about the color red? "The color red evokes sexy thoughts for several reasons. Red often represents love and lust in society," the expert told NBC.

"Red roses and hearts are synonymous with Valentine's Day and amorous feelings. Men historically sought sex in red-light districts. But there's also a biological reason why red appears sexy. When [women] become sexually excited, they blush," he explained.

Thus the opposition to the color according to Pazda. He says that women are more likely to wear red when ovulating or looking for a boyfriend or a hook up, but there's little evidence that women intentionally dress in red for sex. Who knew so much was invested in one single shade?

"We still don't know if they are aware of it. So that is definitely something to look at."

Do you ever wear red intentionally to illicit a little romance? Does the color make you upset when you see other women wearing it? Tell us with a note below!