WENN

Heidi Klum has insisted she was treated "with the utmost respect" while working on America's Got Talent, despite Gabrielle Union's claims of a "toxic" work environment.

Union was fired as a judge on the program back in November, amid reports she raised a number of race and sex-related matters behind the scenes that were not reported to TV officials.

While she and newcomer Julianne Hough, who was also fired after just one season, replaced Mel B and Klum, respectively, the model returned for the current America's Got Talent: The Champions series, and defended the program during the Television Critics Association's winter press tour.

"I've only had an amazing experience," the 46-year-old said, reported E! News. "I can't speak for (Gabrielle). I didn't experience the same thing. To me, everyone treats you with the utmost respect. I've never seen anything that was weird or hurtful."

Variety reported that Union believed she was fired because she asked network bosses at NBC to address an environment that tolerated racist jokes and remarks, including what she said were multiple notes from producers saying she was wearing her hair "too black" for the show's audience.

The accusations were followed up by a "productive" meeting between Union and the network, with an investigation by entertainers' union SAG-AFTRA currently ongoing.