The full-length trailer for Katy Perry's 3D movie Part of Me has been released, and it looks like the cameras are going to catch every up and down, high and low.

Her divorce from Russell Brand is dealt with early in the trailer, and Katy can be seen hunched over in front of her makeup mirror being consoled by a friend.

The overall message of the trailer seems to be that Katy works very, very hard and that her playful persona is just that - a persona. We get to see her looking tired and drawn, and there are a number of scenes of her without makeup!

Tell us what you think - is this the real Katy, or is she still playing up for the cameras?