Zac Efron is a proud big brother! The 28-year-old actor took to social media to congratulate his little brother Dylan on finishing the Chicago Marathon. “👀 that happy guy in the middle. That’s my BROSKI! Congrats on qualifying for Boston in the #ChicagoMarathon. You stud muffin 💪🏼😜🏆🏊🏼🚴🏼🐎&#… Read entire story.
Source: Just Jared