Rugrats in Paris
(2000)

The babies make it to Notre Dame in time, and Chuckie stops his father from marrying Coco by screaming "No!" (his first word).

Angelica exposes Coco's plot, and Chaz calls off the wedding while Mr. Yamaguchi fires Coco.

Chaz and Kira realize they have a connection, and some time later get married. At the wedding, Chuckie tells Kimi (his new step-sister) how lucky he feels before the two children join their parents for a dance.

The film ends with a massive food fight at the reception.

Thanks Mark I!

IMDB