In the old days Petticoat Punishment was used as a form of discipline. It would often involve a boy being feminized into a sissy by a powerful female, usually a Mother or Aunt. He would then be paraded around in front of his cousins, sisters, or in some cases, girls of his own age whom he had offended by his behavior.
Petticoat Punishment included being forced to wear makeup and carry dolls, purses, and other items associated with girls. Sometimes, boys were made to perform tasks that they considered to be girls work, and to appear with their Mothers in public wearing girls clothing.
That was before psychologists knew what they now know about the mind and about behavior modification. Over the past 20 years or so, tremendous progress has been made in dealing with boys who will not stay out of the panty drawer.
The modern version of Petticoat Punishment is not really punishment as much as pretty persuasion. With the right lingerie, hairstyle, makeup, nail polish, stockings, pantyhose, skirts, blouses, dresses, heels, jewelry and perfume, hard changes can be made.Ten out of ten crossdressing psychologists approve of and support this technique, often asking for photos.
In some cases, a Mother will even encourage her son to dress like a girl until the thrill is gone. Unfortunately, this can take months or even years.
I have an example of this method I call Practice Panties, it is a 20 minute recording and is now a free download.