Joan Rivers hates ''grand'' celebrities such as Gwyneth Paltrow and Anne Hathaway.

The 81-year-old comedienne can't bear stars who have high opinions of themselves and thinks the 'Iron Man 3' star is forgettable, while the 'Les Miserables' actress looks her best when downtrodden on screen.

She said: ''Gwyneth Paltrow, calm down. You're pretty, and you're talented. But you're also very lucky. And also, if you go away tomorrow, nobody will notice.''

''And Anne Hathaway -- so grand. Calm down, you know? You looked better without your teeth in 'Les Mis'.''

Though it was the 'Fashion Police' host's birthday last month, she opted not to celebrate as she has a good time every day.

Explaining why she didn't mark the occasion, she told USA Today newspaper: ''Because, one, at one point, who cares? And two, I said to my friends, 'I swear to God, my life every day is a birthday.' I'm having such a good life, you have no idea. My career is blasting away. If this is the third act, where do you sign?''

Despite receiving criticism for her daring humour, Joan insists she doesn't think she goes too far with her jokes.

She said: ''Life is tough. Life is tough. I just think, 'Make them laugh.' ''