Lemondrop

The va-va-voom of a ruby dress, crimson lipstick or a scarlet bra really do elicit a physical response in men ... in the brain area, that is. (Joan Holloway really knows what she's doing.)

According to a study conducted at the University of Rochester, men find women dressed in red more sexually attractive than those dressed in other hues like gray, blue or green.

Over 100 college boys were asked to rate the hotness of several women decked out in different colors. Not only did they rate the red-clad babes in the photos more do-able, the guys also said they'd be willing to shell out extra cash if they were so lucky as to take those ladies on a date.

Now get ready for the sexy science behind the preference: The researchers who wrote the study believe that the sensuality of red has roots in our primate heritage. In the monkey world, males are especially attracted to females displaying red when they're most fertile (i.e., baboons' rosy behinds).

We have to say: Chris De Burgh's 1986 romantic masterpiece "Lady in Red" would have been waaaaaay less romantic if it was about ovulation.