Donald Trump's firstborn, Donald Trump Jr., has referred to his father as his mentor and best friend.
Born in 1977 in Manhattan, Donald Jr. is one of three children of Donald Sr. and his first wife, Ivana. He was only 12 years old when his parents separated and he and his siblings lived with their mother after the divorce. But Donald Jr. still built a strong relationship with his father and has followed partially in the Republican nominee's footsteps, taking a major role in the family company. He hasn't yet run for office, but the idea has crossed his mind, he says.
Scroll down for more about the eldest child of President Trump.
He has taken over the family company
He's married and has five children
He speaks Czech