Researchers say most men prefer women with medium-sized breasts.
And 13% have admitted trying on a bra, mostly for fancy dress or a dare, but some for curiosity or pleasure. Most say they found it uncomfortable.
81% of men surveyed say they would have medium-sized breasts if they were women.
While they like to fantasise about women with large breasts, 53% said they fancy women with medium-sized ones. But 74% agreed breast size was a deciding factor in a woman's attractiveness.
MyVoice.co.uk conducted the online survey among 1,222 people for National Cleavage Day on March 30.
Around 5% of men like their women to have small breasts and 28% said any size would do. 14% preferred women with larger ones.
Well over half the men in the survey admitted they'd be unlikely to know if a woman's assets were genuine or the result of a hi-tech bra. But only 24% have been disappointed or surprised on discovering the truth under the bra.
Regardless of what men think, a tandem survey among women reveals 74% of UK women are happy with the size of their breasts. Only one fifth of women said they would consider, or has had, a boob job.
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28% said any size would do. That's me - to quote one of my good friends, "just give me something I can work with"