I've been watching her show It's Complicated, heard her on a radio interview this week and I'm convinced that she's:
*an obvious S-type - very concrete language, not intellectual, etc.
* has a Directive style
* seems like a Guardian (though she COULD be a similar SP type like ISTP, I suppose)
* I'm getting a T vibe
I couldn't get a handle on E versus I but in several interviews she's said that she's very Introverted so I guess, that's it.
When I heard her on the radio I was really surprised by how blunt, direct and no-nonsense she was. Very different from most actresses. Had a good sense of humor though.