Labour leadership contender Liz Kendall says it is 'unbelievable' that she was asked about how much she weighs, during a recent interview with a Mail on Sunday journalist.
Political reporter Simon Walters wrote that the Leicester West MP "looks about the same weight as the Duchess [of Cambridge] - about 8st - though when I ask she slaps me down."
He claims Kendall, 44, told him to "f*** off" when he asked her about her weight during their interview, before quickly adding, "don't print that".
Speaking afterwards on BBC Radio 5 live, Kendall said: "I just think it's unbelievable that in the 21st Century women still get asked such very, very different questions from men.
"Can you imagine the Mail on Sunday asking the weight of the prime minister, George Osborne or any other leading politician?
"I cannot wait for a world when women are judged the same as men and not by those kinds of questions."
It's not the first time the journalist in question has asked politicians about their weight.
In a 2014 interview with Chancellor George Osborne, Walters wrote: "It is impossible not to notice his dramatic weight loss. He is a real skinny malink. 'Am I?' he says, modestly patting his slim line waist."
Osborne responded that he had "lost a couple of stone" on the 5-2 diet.
Kendall is up against Andy Burnham, Jeremy Corbyn and Yvette Cooper in the Labour leadership contest.
The party's previous leader Ed Miliband stepped down after the party suffered catastrophic losses in the General Election in May.
A vote will take place next month, with the new leader announced on 12 September.
In the Mail interview this weekend, Kendall also hit out at implications among some Labour commentators that she is unfit to be a leader because she is single, and doesn't have children.
"When people say, 'You don’t have a family' it makes my blood boil. I thought, 'Yes I do, I have my dad, my mum, my brothers and nieces,'" she said.
"...As you get older, of course you want to be settled, but life changes and it doesn’t work out. Who knows what will happen? That’s all I say. I am a person who loves and wants to be loved."
Photos: Rex Features