Haha, it's all good zepka102! Happy Thanksgiving!

Yeah, I figured it was probably the same picture book because that's exactly what I thought when I first saw the crowns.
It's also the show I'm looking forward to the most. I think it will do very well! As for the book CATS is referring to, there are videos and character descriptions online that pretty much tells us what the story will be about. The book is basically the Cinderella story but expanded with new characters (such as Jean-Michel) and new situations (Cinderella saving the prince, one stepsister being nicer than the other, etc). From the descriptions I've seen, it's pretty much a combination of the Perrault story, Ever After, Ella Enchanted, and Douglas Carter's Beane's imagination. I think it will be pretty awesome!
As for Cinderella's ballgown, I really like it. In most versions, her dress is either white (Disney's Cinderella, Julie Andrews, Lesley Ann Warren, Ever After, Hilary Duff's Cinderella, etc) or blue (Disney's Cinderella, Brandy, ABC's Once Upon a Time), so I'm not surprised her dress is white here. Plus, in an unused version of "In My Own Little Corner" reprise, Cinderella sings "I am dancing in the palace of all places. And, my gown is like a cloud of snowy white." So, maybe they added that back in?