Article continues below advertisementSports Illustrated model and former girlfriend of Jeffrey Epstein, Stacey Williams, won't back down when it comes to Donald Trump's close friendship with the convicted s-- offender.In a broadcast interview with CNN's Brianna Keilar on Friday, July 18, Williams, who previously took a polygraph to prove she was not lying about a Trump assault, told the host that Epstein and the now-president were "very close" and "up to no good.""They were best friends," Williams said.