Justin Lowe and Micah Dyer. Rob was born on March 17, 1964, to Barbara Hepler, a teacher, and Charles Lowe, an attorney. Nearly four years later, on Jan. 15, 1968, younger brother Chad was born.

Rob Lowe and his brother Chad are always in tune with one ... Rob and Chad are also brothers to sibling Justin Lowe, as well as half-brothers to Micah Dyer. Continuing to chat with PEOPLE, Rob ...

Rob, 60, went on to explain how Chad, 57, got "a lot of big brother hand-me-downs" after the blaze. "He's back to being 15 again," the Unstable star joked. "He loves to dress like a dad (and) I ...