King Charles III and Prince William lived very different lives in their mid-30s. Charles was nearing the end of his marriage to Princess Diana and had just welcomed his second son, Prince Harry.
By age 37, his son, Prince William, had been married for eight years and had already had three children in his seemingly strong marriage to the Princess of Wales, Kate Middleton.
Clint Eastwood (28) & Scott Eastwood (28)
When we think of classic Hollywood, one of the few names that come to mind is Clint Eastwood. He rose to fame with his role in "Man with No Name" during the mid-1960s.
His lookalike son, Scott, followed in his infamous father's footsteps in pursuing a career in acting. By the time he was 28, he was landing roles in 2015's "The Longest Ride" and 2016's "Suicide Squad."
Alain Delon (26) & Alain-Fabien Delon (26)
Alain Delon rose to fame as a French movie performer in the 1960s. His son, Alain-Fabien Delon, bears half of his father's famous name and has followed his lead into acting.
Being the head-turner that he is, it's no surprise that Alain-Fabien had a prosperous modeling career as the face of Dior Homme. The young actor made his debut acting appearance in 2001 in the film Fabio Montale and was most recently in "Golden Youth" in 2019.
Stellan Skarsgård (42) & Alexander Skarsgård (42)
Stellan Skarsgård made a name for himself in Sweden as one of the country's most prominent actors. He later took Hollywood by storm with parts in movies like "Mamma Mia."
In recent years, his son, Alexander, has landed huge roles on both the big and little screen, including one of the main characters on HBO's acclaimed show, "Big Little Lies." Like father, like son!
Alan Thicke (42) & Robin Thicke (42)
Alan Thicke was America's favorite sitcom father on "Growing Pains" throughout his late 30s and early 40s. You would have expected the late actor's son to have followed his footsteps in acting, but Robin Thicke paved his own way in the entertainment industry and as a singer and songwriter.
He's had many hits, including the ever-so-controversial "Blurred Lines." They may not have had the same career path in the industry, but look at that smile; it's uncanny!