John Ritter & Jason Ritter – 30
John Ritter was one year into his legendary tenure as Jack Tripper on the comedy Three’s Company when he turned 30 in the year 1978. At that time, the show was in its second season. Throughout the subsequent quarter of a century, Ritter would continue to be a fixture on television right up until the untimely year 2003 when he passed away. When his son Jason, who is nearly identical to his “twin” and reached 30 in 2010, the younger Ritter was already well on his way to creating his own Hollywood career, which has only continued on an upward trend in the decade thereafter.
John Ritter & Jason Ritter 30
Goldie Hawn & Kate Hudson – 33
Goldie Hawn and Kate Hudson, both 33 years old, are one of the most famous mother-daughter acting teams in Hollywood. The former actor was one of the most popular movie stars of the 1970s, went on to become an icon of the time period, and has remained well-known ever since, whereas the latter actress has been in the public eye ever since her breakthrough performance in Cameron Crowe’s Almost Famous in the year 2000.
Goldie Hawn & Kate Hudson 33