Conversation so far:
Who did the casting for Chapter 27?
Casting By Sig De Miguel,Cathy Sandric, Gelfond,Amanda Mackey
Who was Alexandra Milchan for Chapter 27?
Alexandra Milchan was one of the movie's producers.
How did Alexandra Milchan get Jared Leto to play a role?
With the help of producers Alexandra Milchan and Robert Salerno, Schaefer cast Jared Leto as Mark David Chapman.
What other films was Jared Leto in besides Chapter 27?
Jared Leto was also in hit movies like Fight Club, Requiem For A Dream, and American Psycho.

Question: How much weight did he gain?
Self-contained rewrite: How much weight did Jared Leto gain for Chapter 27?