Stinkie: Smell-o-gram.
Kat: In two years I have been to nine different schools, eaten in nine cafeterias. I can't even remember anyone's name.
Kat: Drop dead.
Stretch: Too late.
Casper: God, I'd kill for a pinky.
Casper on Screen: I told you I was a good dancer. Can I keep you?
Kat: Casper?
Kat: I can see right through you.
Casper: Yeah, kind of happens when you haven't got any skin.
Casper: All I want's a friend.
Amelia Harvey: James, I know you have been searching for me, but there's something you must understand. You and Kat loved me so well when I was alive that I have no unfinished business, please don't let me be yours.
Stinkie: Scream or sugar?
Dr. Harvey: Honey, I think it's time that we sat down and had a little talk.
Kat: It's a little late for that, Dad.
Dr. Harvey: How late?
Kat: Oh, don't worry, not that late.
Fatso: I feel like Oprah on hiatus.
Stretch: You look like Oprah on hiatus.
Answer: The Ghostly Trio were, at the time, playfully teasing James, so Fatso wearing something else instead of what Amelia was seen wearing in the photo, was just a way for them to have some fun at James' expense. At the end of the movie however, they did keep their promise and let James have one final chance to speak to his wife.
Why that specific outfit, though?
Again, to playfully tease James.