Republican presidential candidate Donald Trump reportedly made disparaging comments against Khloe Kardashian during a 2009 taping of Celebrity Apprentice, allegedly calling her fat before firing her from the show in 2009.
An editor on the show told the Huffington Post that Mr Trump called Ms Kardashian a "piglet", made comments on her looks, and tried to have her removed from the show.
"What is this? We can't even get the hot one?" Mr Trump said, according to the editor.
A second source from The Apprentice confirmed the comments, telling the Huffington Post, "He said: 'Why don't we fire Khloe? She is a fat piglet. Why did we get the ugly Kardashian?'"
A third source, also an editor, said Mr Trump fired Ms Kardashian from the show for personal reasons rather than merit, apparently asking staff for reasons to get her off the show.
Ms Kardashian was fired from the show for the fact that she had been attending court-mandated classes for a prior DUI incident, but a fourth source said Mr Trump 'improvised' this reason.
These allegations follow a week of heightened controversy around Mr Trump, with the Huffington Post reporting earlier this week that he ridiculed a country music singer's skin, saying she needed "some serious f***** dermatology."
On Thursday, The Daily Beast reported that Mr Trump had described deaf actress and former Apprentice contestant Marlee Matlin as "retarded".
Multiple women have also come forward this week to accuse the presidential candidate of sexually assaulting them, saying the publication of a recorded conversation in which Mr Trump brags about groping women prompted them to come forward.
The allegations include photographer and former model Kristin Anderson saying Mr Trump put his hand up her skirt at a Manhattan nightclub in the 1990s, and businesswoman Jessica Leeds saying Mr Trump grabbed her breasts and tried to reach up her skirt during a flight in the 1980s.
Mr Trump is vehemently denying the allegations, telling a rally in West Palm Beach on Thursday that they were part of a 'global conspiracy', and tweeting on Sunday that the allegations were "made up" and that "nobody has more respect for women than me".