Zac Efron takes his denim seriously. (Either that or he hates doing laundry.)

The "High School Musical" star admits to wearing his favorite G-Star Raw jeans continuously for eight weeks to achieve that ideal worn-in look from the once stiff denim, reports WWD.

"I wore them all throughout 'High School Musical 3.' I even wore them hiking. You have to wear them everywhere to get them right," Efron told the source at the G-Star and Nylon Guys fête for the actor on Wednesday.

While we love the actor's style and dedication, we're not so sure about his hygiene. Eight weeks without washing?!

Dirty denim is one trend we're not condoning.

Not sure if your denim duds are still on trend for fall? Ask the editor!