Ok so, in the movie and book, after the baseball scene.... Edward looks at Alice and says "Keep your thoughts to yourself." Anyone know what she thought? Did I miss something?

Edward is referring to Alice's vision of Bella becoming a vampire - which he's attempting to keep from Bella. Of course, during the ballet studio fight - Alice lets it slip about her vision - and during all the pain, Bella is still able to pick up on it - which Bella refers to during the gazebo dance.

alice (as everyone knows)can see the future and she sees bella's death and bella becoming a vampire.. edward didn't want bella to found out about alice's premonitions so he told her to keep her thoughts to herself..

I think Alice see's Bella as her best friend (even though tu don't see their friendship develop as much in the movie) and isn't as worried about upsetting Bella as Edward is (By the way does anyone else think he is overprotective?), so Alice wouldn't be worried about upsetting Bella about what she see's in her visions (Bella dying o becoming a vampire (: )