EXCLUSIVE: Megyn Kelly Dishes on Why She Cut Her Hair, and It Has Nothing to Do With Donald Trump

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Megyn Kelly is standing up to her nemesis, Donald Trump, and she spoke to ET about the TV special that will certainly have the whole country talking.

"When I went into Trump Tower that day, I was a little anxious," Kelly admitted to ET. "I didn't know what to expect. I didn't know whether he would try to embarrass me or threaten me or berate me, but he did none of those things."

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The Fox News anchor sat down with Trump for an interview set to air on Megyn Kelly Presents after enduring nearly eight months of attacks from the billionaire presidential candidate.

The conflict has launched Kelly into primetime, and with the spotlight on her now more than ever, everything she does is open to scrutiny, from her interview style to her new haircut.

"It was so funny," Kelly said. "I was doing the profile for Vanity Fair at the time, and it was wrapped, and we had to have a follow-up interview about the hair! [The reporter] called me back and said, 'I need to know why you cut your hair!' and I said, 'Because it was long and I wanted it short.'"

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Kelly admitted that with her new 'do she might be in a "saucier phase," and if that's the case, it couldn't have come at a more opportune time. For the better part of a year, Trump bashed Kelly, calling her "the most overrated person on television" for the tough questions she asked him during a debate in August.

While Trump's criticisms against Kelly have been polarizing for some, Kelly seems to have a complicated relationship with the former reality star.

"Donald Trump is a lot of things," Kelly said. "Even in the midst of coming after me, he can be charming. It's very confusing. One minute you're thinking, 'What?' and then you're laughing."

The highly anticipated interview reportedly will include a moment in which Kelly confronts Trump about their public battle over the past year.

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"I have great respect for you that you were able to call me and say, 'Let's get together and let's talk,'" Trump says in an advanced clip. "I would not have done that."

Megyn Kelly Presents airs Tuesday at 8 p.m. ET on Fox.