Justin Bieber is finally apologizing to defeated UFC badass Ronda Rousey, after she claimed he was rude to her 17-year-old sister when she asked him for an autograph.

“I guess, supposedly, she asked for a picture with her sister or something, and I guess I said no?” he tells Elvis Duran in an interview airing on “Entertainment Tonight” on Wednesday. “But I don’t remember this happening so, Ronda, I’m sorry. Don’t kick my ass!”

However, Bieber took a different tack when asked what he’d like to do outside of music, saying, “I would like to get better at boxing . . . Did you see Ronda Rousey?” — referring to the beating she took at the hands of Holly Holm in Australia earlier this week. “She got knocked out cold! Oh my God, she got knocked out so bad. Yeah no, she got pummeled.”

Bieber, promoting his new album “Purpose,” also added of his future plans — “hopefully have a family, a wife, some kids . . . an indoor basketball court and an indoor pool,” he says, explaining, “I want to build it and stuff, and find the right place.” On Saturday, Bieber was spotted having a good time at SPiN pingpong club in New York City.

This article originally appeared in the New York Post's Page Six.

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