“I wish I was more of a diva,” fashion-model-turned-TV-mogul Tyra Banks told ABC’s Nightline in an interview Tuesday. “I wish [I] was harder, I wish I didn’t care so much about being the nice girl all the time. Because a lot of the time people can take kindness for weakness … so I wish I had a little bit more ‘oomph’ in me.”

Tyra’s “diva” attitude has been blamed for a number of changes behind the judges’ table on her hit CW series, America’s Next Top Model. In recent years, former ANTM judges Janice Dickinson and Paulina Porizkova haven’t been shy about criticizing the model competition, but that not a topic Tyra’s willing to get into.

“I don’t know,” she told host Cynthia McFadden. “Why do you think?”

And another question Tyra doesn’t like to answer? The rumors about her romantic life.

“Oprah told me don’t talk about your man unless you want the whole world in your business,” Tyra remarked. “I said OK.”