Colin Farrell Looks Buff in a Tank Top While Covering Up New Bald Head

Colin Farrell puts his muscles on display while wearing a tank top during a hike near his home on Friday (February 5) in Los Feliz, Calif. The 44-year-old actor was joined by a female companion who appears to be his sister Claudine. PHOTOS: Check out the latest pics of Colin Farrell Earlier in the week,