Sean Penn: Shirtless & Ripped on Ibiza Vacation!

Sean Penn shows off his ripped physique while going shirtless during a vacation on Sunday (August 11) in Ibiza, Spain.

The 52-year-old actor was recently one of the signatories on an open letter to Turkish prime minister Tayyip Erdogan‘s government, which is currently in a state of unrest in Turkey, according to THR.

PHOTOS: Check out the latest pics of Sean Penn

In the letter, the signatories “vigorously condemn the heavy-handed clamp down of your police forces on the peaceful protesters.”

In June 2012, Turkey became unrest after police forcibly attempted to move peaceful demonstrators, who had camped out in Istanbul’s Taksim Square in an effort to stop a planned redevelopment of the area.

10+ pictures inside of Sean Penn going shirtless during a vacation in Ibiza…