The actress was at the tv studios to film her appearance with David Letterman on his Late Show programme and looked almost unrecognisable from her earlier self.
She has had her classic Hollywood style blonde look changed to a much lighter coloured straight hair style that looks more like Lady Gaga than Hollywood.
It was a much more grown up look in every respect as she also unveiled a totally new make-up style with her eyebrows looking different to contrast with her new lighter hair and also some striking red lipstick to give a look very different to the old Hayden look.
Add to this a new fashion style as well and it was a wonder that anyone even recognised her. She wore a very tight mini dress which featured a stained glass look motif and showed off a much slighter figure than we have seen before.
As if any more was needed to show how her image has been changed Hayden topped the new look off with a bright red pair of little boots.
The producers of Nashville must have been very pleased with the impact she made on the show as she was with Letterman to promote the new series of Nashville in which she stars as country singer Juliette Barnes, The new series in due to premiere on ABC in September.