The Brady ladies at a charity baseball game at Dodger Stadium in 1973.
Source: Reddit
The Brady Bunch was one of the biggest TV shows in the 1970s. This photo is part of a LA Dodgers charity baseball game in August 1973. Here's the Brady women striking a pose that day featuring Jan, Marsha, Cindy, Carol, and Alice the maid (well, at least the actors who played these roles.)
Peter, Greg, and Bobby - the Brady boys were also on hand that day doing the batting duties alongside of actor Jack Lemmon, Walter Matthau, Don Newcombe - and Ella Fitzgerald who provided celebrity support. I'd say that would be a homerun of happiness for the fans attending.