Sienna MillerSienna MillerGood gracious... Sienna Miller has been visiting the hairdressers again.

This time, the shoulder-length bob has shrunk to a close crop with a long fringe - very nineties.

The stunning actress was at the closing night gala of the AFI Fest in LA, where her movie Casanova was showing, when she unveiled her latest look.

Looking very blonde at the front but not so light from the back, there was something more interesting than her latest scissor-action...

And that was the presence of her on-off lover Jude Law.

They were spotted last week jetting off to America, and now it seems like they're definitely back on, as Jude accompanied his former fiancee to the screening.

Of course, they didn't do the posing thing together, but there was no doubt why Jude was there... when asked by a reporter what the situation was between her and Jude she replied:

"Well, it's pretty obvious, isn't it? No, it's just fantastic to have him here and support the film.

"We're working things out. And he's always and will remain to be my closest friend in world, so, you know, so it's good."

With such a pretty face, Sienna does seem to be able to get away with any style and look, but we're voting for the long hair to return.

Check back through Sienna's hair action in our gallery above.