It has become a favorite celebrity pastime, with everyone from Scarlett Johansson to Vanessa Hudgens having being caught in the act. Now, however, scientists say our willingness to share naked picture of ourselves with others might actually not be our fault – it could be hardwired into our brain. ‘Being desired is very arousing to women,’ claims clinical psychologist Marta Meana, president of the Society for Sex Therapy and Research. ‘Anincreasing body of data is indicating that the way women feel about themselves may be very important to their experience of sexual desire and subjective arousal, possibly even outweighing the impact of their partners’ view of them.’ Recent studies have found that more than half of women’s sexual fantasies reflect the desire to be sexually irresistible to men. In one recent survey, 47% of women reported the fantasy of seeing themselves as a striptease dancer, harem girl, or other performer. 50% fantasized about delighting more than one man. The behaviour also appears in men, and some researchers believe they may have inherited the urges from primate ancestors. Male monkeys and apes routinely display their penises to females to indicate sexual interest.