Zac Efron: John John Denim Campaign.

Zac Efron shows off his killer arms in this hot new ad campaign for John John Denim!

The 24-year-old actor was revealed as the face of the fashion line earlier this year and went to Brazil to announce his partnership.

Zac shot the campaign on the streets of Los Angeles with photographer Jacques Dequeker and styling by Jenny Richter and Felipe Veloso.