(Caitlyn Jenner and Jimmy Kimmel. Screenshot via YouTube.)

Jimmy Kimmel has apologized to Caitlyn Jenner for cracking jokes about Jenner’s appearance during her transition.

While appearing on “Jimmy Kimmel Live” on Tuesday night, Jenner confronted Kimmel about using her as a punchline.

“Kris and I, we had gone our separate directions, not because of gender issues but because of other things,” Jenner told Kimmel. “And there I was back in Malibu all by myself, and so I slowly went through, told all my children, because it had been just hammered all over the media. In fact, guys like you making, hmm, some jokes.”

“We didn’t know what was happening, we thought you were just vain,” Kimmel jokes.

The late night host then gets serious and says, “We didn’t know what was going on. I’m sorry about that, by the way.”

“Now he’s going to apologize. But I accept your apology,” Jenner says.

Jenner also addressed meeting Steven Tyler and telling him that the song “Dude Looks Like a Lady” was her “theme song.” The reality star posted a photo of herself and Tyler on Instagram captioned, “@iamstevent and I are working on our duet for Dude Looks Like a Lady. One of my favorite songs!”

@iamstevent and I are working on our duet for Dude Looks Like a Lady. One of my favorite songs!

A post shared by Caitlyn Jenner (@caitlynjenner) on Jul 18, 2017 at 9:53am PDT

The photo’s caption received backlash due to the song’s title being problematic for the transgender community. Jenner explained to Kimmel why the song had meaning for her.

“I met him once briefly, but I’m sitting there thinking I have to go say hi,” she explained. “So, I go backstage, and I told him, ‘I’ve had some really bad times. I always used to take your song, ‘Dude Looks Like a Lady,’ and that became my theme song,” Jenner says. “Driving in my car, whipping up the tunes. He loved it. He hugged me and said we got to get together. He was great.”