The star of E!'s Fashion Police has turned her attention on the Duchess of Cambridge, days after slamming Christina Aguilera's fuller figure and calling her a 'fat b****'.
She appeared on the Tonight Show with Jay Leno and told him she thinks Kate shouldn't recycle her wardrobe.
'Only in this country they call it a faux pas,' she said. 'In England they are like look how thrifty she's being, showing the British public that the Royals are in a recession as well.'
Kelly said Kate's duties should entitle her to throw or give away her clothes at the end of every day.
She fumed, 'Well I'm sorry but if I had that job I would only wear it once.
'If I am going to be the future bloody Queen of England I'm going to wear that dress once because I'm giving up the rest of my life, all of my privacy, at least I can get a new dress every day.'
Leno chimed in, 'How about underpants? Would you throw them away?'
Kelly replied, 'Well, if I could I would.'