Ok, so the morgue scene in Alien 3

[Pvt. Hicks]

Was that a real person playing Newt, or a dummy, or what?

[The Necronoir]

Looked like a real girl to me. There was a dummy cast for the drowning sequence that was barely seen even in the Assembly Cut though.

[Xhan]

Both.

[Pvt. Hicks]

Both.

I'm talking about the explicit shots.

So a little girl just got nude?

[MadassAlex]

Not a big deal, since it wasn't pornographic.

[Mr. Domino]

I'd have to rewatch a bit of the quad footage, but I believe they mentioned in there somewhere that the explicit and autopsy shots were the dummy.

[ShadowPred]

Not a big deal, since it wasn't pornographic.

Must've been a big deal off camera when they were even suggesting the idea of it. I don't believe it for a second.

[SM]

Newt was part dummy and part Danielle Edmond.

[brennan4]

Newt was part dummy and part Danielle Edmond.

Which parts were which?

[ShadowPred]

I'm going to say the upper part of the body.

[Pvt. Hicks]

Newt was part dummy and part Danielle Edmond.

What about the explicit shots? A dummy?

[Uncanny Antman]

What do you mean by explicit?  Nudity or gore?

Danielle played Newt in all facial close-ups and several body shots.

[The Necronoir]

Not a big deal, since it wasn't pornographic.

Must've been a big deal off camera when they were even suggesting the idea of it. I don't believe it for a second.

Just because someone is naked doesn't mean it's pornographic. Believe it or not, I think the majority of people have a far more mature attitude than the media would lead us to believe. Anyone turned on by a young girl playing a corpse has got serious issues.

[Pvt. Hicks]

What do you mean by explicit?  Nudity or gore?

Danielle played Newt in all facial close-ups and several body shots.

Nudity.

Oh my God. All I am asking is, for the naked chest shots of the little girl, was it a dummy, or was it a real little girl.

[Uncanny Antman]

Which has been answered. 

Both.  The close-ups are Danielle, the wide shots are the dummy.  And it's quite obvious too, in my opinion.