Twins!
From seasons 1 to 8, twin sisters Lindsay and Sidney Greenbush portrayed the lovely Carrie Ingalls. During the course of the show however, Sidney broke her arm many times and had to wear it in a cast. Therefore Lindsay did most of the scenes as the character Carrie.
Melissa Gilbert’s Political Run
In 2016, Melissa Gilbert ran for a seat in the U.S. Congress as a Democrat in Michigan’s 8th congressional district. Gilbert even won the Democratic primary! However, she dropped out later, citing health issues as the cause.