Rosie O'Donnell has hit out at the "gross excess" of Jeff Bezos and Lauren Sanchez's wedding.

The Amazon billionaire and his partner tied the knot in Venice last week in a lavish ceremony attended by A-listers including Kim Kardashian, Oprah Winfrey and Orlando Bloom but the 63-year-old comedian was far from impressed with the couple's celebrations.

Rosie wrote in her newsletter on Substack: "It turned my stomach. Seeing all those billionaires. Gathering in the gross excess of it all. The show of it.

"Is Oprah friends with Jeff Bezos? Really - how is that possible? He treats his employees with disdain. By any metric he is not a nice man.

"And his fake fem bot wife. Who looks like that? Why would he choose her? After the salt of the earth MacKenzie (Scott, Bezos' first wife)."

O'Donnell claims that Bezos has "sold his soul" with the "performative nonsense" of the nuptials, which spanned three days and is said to have cost more than $50 million.

The former talk show host said: "Bezos was raised by a single mother. He knows exactly what he does. So do all of his guests. Posing for photos forgetting themselves. In their designer outfits. Ready for a Vogue cover. A spot on ET. More worthless performative nonsense."

Rosie questioned how US people will fight back against the administration of President Donald Trump when they have "become numb to gross excess".

She said: "Celebrity worship. Devoid of humanity... As we worship the ones hurting us. Numbly asking for nothing. In an American stupor. Of (our) own making."

Rosie revealed earlier this year that she and her youngest child Clay, 12, had left the US for Ireland after Trump was re-elected as president for their "safety and sanity".

The star - who has traded verbal barbs with the White House chief in the past - told Us Weekly magazine: "I know myself enough to know that this was something I needed to do for the safety and sanity of myself and my non-binary child...

"There's a great, great school there. And Clay has done very well. And they were really welcoming.

"And I love the little town, the little village. It's in the heart of Dublin, but it's still a village where you know the name of the grocer and you know the name of the cashiers. People are unbearably kind in a way that shocks me every single day."