Oh, the irony: Hilary Swank gains weight for a book about being slim

Renee Zellweger did it for Bridget Jones' Diary. Charlize Theron did it for Monster. Gaining weight for a movie is commonplace in Hollywood. But in the case of Hilary Swank's new movie, it certainly is unexpected. As Elastic Waist reveals, Swank will be appearing in the book adaptation of French Women Don't Get Fat -- and ironically, she is gaining 30 lbs for the role. Doesn't that totally defeat the theme of the book?

Apparently, Swank will play the manager of a champagne company that deals with French women who remain slender despite eating all the things we're told to stay away from: Bread, cheese, dessert, and so on.

Me thinks a little bit of meat on the bones of this frail-looking actress can't hurt. Though, gaining weight and losing it quickly can. Your thoughts?