Jason and Jeremy London
Jason and Jeremy London are hard to tell apart and were in several different television shows and films throughout the late 80s and early 90s. The twins were able to pursue the same career and got into acting together. You might recognize Jason from the film Dazed and Confused, as that film is where he earned a majority of his fame.
His brother Jeremy starred in Mallrats, 7th Heaven, and Party of Five, which were all super popular upon release. The twins even worked together on an episode in Party of Five, which was one of the first times people started to realize that they were twins.