London: Britney Spears doesn`t believe in keeping herself clean, and boyfriend Jason Trewick refused to go out with her until she takes off her dirty dress.
The singer`s habits of wearing the same outfit for several days and rarely washing her hair are said to have infuriated Trewick.
"Britney isn`t the type to cover herself in pretty smelling lotions," femalefirst.co.uk quoted a source as saying. "She hates washing her hair, so sometimes it can smell downright sour. She`ll sometimes grab an outfit and wear it two or three times in a week.
"Recently she put on a sun dress for the third day in a row, but Jason refused to leave the house with her until she put on something else. Thankfully, she`s trying more now because even she knows you couldn`t think of a more embarrassing reason for a relationship to break down. It`s just plain laziness," the source added.