Kathy Griffin intends to ''let people have it'' when she takes over from the late Joan Rivers on 'Fashion Police'.

The 54-year-old comedienne has admitted she has some ''very, very large shoes to fill'' when she replaces the 81-year-old star - who died in September while undergoing a minor throat procedure - but is determined to adopt the former presenter's no-nonsense attitude when it comes to her comments.

Speaking on 'Jimmy Kimmel Live!', she said: ''In her honour, I will not be holding back. I am giving no passes, I am going to let people have it, I'm gonna bring the hammer down.

''This was a job that was held by our dear friend Joan Rivers. I understand I have some very, very large shoes to fill.''

Kathy then decided to practice her tough-love approach discussing the fashion choices of celebrities on the programme by testing out her tactics on Jimmy.

She told him: ''You might want to up your game. I'm tired of the same suit every time. I get it. It's Gucci, it fits well - yawn!

''Give me some sparkle! Give me a fig leaf! Take a risk for god's sake. Don't just show up again looking nice-ish. Give me something.''

Kathy will take over from Joan - who hosted the show since its first episode in September 2010 - on January 12, 2015 and will front 17 new episodes alongside fellow newcomer Brad Goreski and returning panellists Giuliana Rancic and Kelly Osbourne.