In one scene Kath is using the supersoaker gun on the neighbours cat. In the original Australian version, Kim uses the supersoaker on Kel's car when he is about to propose to Kath. Kath mentions she uses the supersoaker to scare away the cats.
As written on August 15, 2008 in a WENN article, Selma Blair's attire was so tight it cut into her thighs. Also for her role of Kim, Selma had to get hair extensions.