Zac Efron was dressed down in a tight tank and pants on the New Orleans set of The Paperboy yesterday. Zac's been working on the project in the Big Easy since the beginning of the month, just weeks after he was spotted filming scenes for Heartland in Iowa. Zac's costars Matthew McConaughey and Nicole Kidman have also gotten into their roles, and she sported a particularly racy outfit during a recent day in front of the cameras. Nicole's not the only one showing off her assets, since Zac has been baring the buff arms he keeps in shape with TRX workouts. The long hours flexing those muscles is paying off in PopSugar's shirtless bracket, which has Zac in first place after the first day of competition — make your pick for a chance to win $1,000 to J.Crew!