Zac Efron's Hot Younger Brother Is About to Make All of Your Dreams Come True

A photo posted by Zac Efron (@zacefron) on Jul 6, 2015 at 7:51pm PDT If you ever thought that Zac Efron was a one-of-a-kind gem to grace the earth with his presence, think again. On Monday, the actor revealed that his good looks run in the family when he shared a black-and-white photo and himself and his younger brother, Dylan Efron, on Instagram. In the photo, a shirtless Zac wraps his muscly arms around an equally shirtless Dylan while riding on his back, and the world instantly became a bette...