This episode was produced during the 1985-1986 season (copyright 1986) and aired at a later date. The opening credits and painting show a baby (pre-Brian Bonsall) Andy. Alex is still dating Ellen in this episode (Tracy Pollan left at the end of season 4) and Jennifer is about to turn 13.
Despite being mentioned as Jennifer's friend in many episodes, this two-parter marks the only actual appearance of Jennifer's friend Chrissy.
An alternate title considered for this episode was "Down & Out With the 'In' Crowd."
The title is from the 1963 song "It's My Party" sung by Lesley Gore and became a number one hit.