Cameron DiazCameron DiazThere are some things which are a given when it comes to the relationship rule book.

And Cameron Diaz knows all this...

She pulled out all the stops when she attended the MTV Movie Awards.

And is it any surprise?

Not so much... she was up on the same stage as Jessica Biel.

That's Jessica Biel who's rumoured to be spending a lot of time with Cam's ex, Justin Timberlake.

And every girl knows that in this scenario it's all about looking and feeling hot, hot, hot.

Check out whether Cameron succeeded and see all the MTV action in the galleries above.