Shirley Temple declined the role of Dorothy in the Wizard of Oz. Also, in another thread we were talking about the album cover of Sgt. Pepper, and, yes, she's on it. In fact, she appears twice on the cover, and I believe she is the only non-Beatle to appear twice on that cover.

There are only four people still alive (other than Paul and ringo) from the cover: singers Bob Dylan, Bobby Breen, and Dion, and artist Larry Bell.