I just heard about this and - WOW! I work in advertising and we are running an ad for a customer that mentions vajazzling in their ad. They have a site. Here is the definition from their site.
Vajazzling: The act of applying glitter and jewels to a woman's nether regions for aesthetic purposes.
And a quick use of the Google finds that Jenifer Love Hewitt is a proponent, active partiipant and fucking nutjob.