Girls, how often do you wash your bra?

saw this post in thestar..and found it is quite interesting cause i really thought that all the girls,at least most of the girls wash their bra quite often,maybe few times per week....but....
http://thestar.com.my/news/story.asp?file=/2010/2/13/nation/5669088&sec=nation

Girls, how often do you wash your bra?
Other News & View
Compiled by ANN TAN, ZANI SALLEH AND A.RAMAN

A SURVEY has found that a number of Singaporean girls wash their bras only once a week, Sin Chew Daily reported.

Some never washed them at all, the daily said, quoting a survey carried out by a news portal. More than 200 women took part in the survey.

It said that as of Feb 9, 108 respondents said they washed and changed their bras everyday but 42 others said they only changed them once a week. Another six said they washed their bras once a year while six others said they never washed their bras.

The daily quoted the online news writer as saying he was surprised with the level of cleanliness among Singaporean girls.

“Although some women work in an air-conditioned environment and may not sweat so often, the skin will still turn oily after some time and this will result in body odour. It is thus more appropriate to change the bra every day,” he said.

However, a gynaecologist said it is not necessary for women to change their bras every day especially if they work at the office.

“Bras are not like panties which have to be changed daily. But for those who sweat easily, it is advisable to change the bras frequently.”