Continuity mistake: After Spike chases Jean-Claude out of the church, the parents and their kids stand outside. Chuckie is in his father's arms holding his Wa-wa (teddy bear). They go back inside, where Kira gives Chuckie that same missing teddy bear.
Rugrats in Paris: The Movie (2000)
Ending / spoiler
Directed by: Paul Demeyer, Stig Bergqvist
Starring: Tara Strong, Elizabeth Daily, Christine Cavanaugh, Cheryl Chase
Chuckie's dad doesn't marry Coco. Instead he marries Kimi's mom, which makes Chuckie and Kimi siblings and now Chuckie has a new mom he always wanted.
Jarvas
More mistakes in Rugrats in Paris: The Movie
Chuckie Finster: A baby's gotta do what a baby's gotta do.
Trivia: Towards the end of the movie, when Coco is stomping out of the church and Angelica rips her dress by stepping on it, everyone laughs and takes pictures. This exact same incident happened in the same way in the movie "It Takes Two".