The fourth season of the family sitcom Full House originally aired on ABC from September 21, 1990 to May 3, 1991. The entire season was directed by Joel Zwick.
Plot
Starting in season four, Danny realizes that he must start disciplining Michelle. Jesse proposes to Becky and they soon become married. Joey's career takes a turn for the better when he is offered a job in Las Vegas to open for Wayne Newton. In the season finale, Becky finds out that she is pregnant as Jesse tells her, he wants to go on tour with his band. D. J. begins eighth grade and Stephanie goes to third grade.