kimjustinoreilly.jpgKim Kardashian is brushing off Bill O'Reilly's harsh criticism about a recent Elle Magazine photoshoot she did with 16-year-old Justin Bieber.

In the magazine spread, Kim K, 29, is the object of young Biebs affection ... with the two of them flirting with each other while playing on the beach. Bill O'Reilly reacted to the photos by saying "gross ... It's a 16 year-old having an affair with a celebutante!" The FOX anchor even went so far as referring to the photoshoot as a "Mrs. Robinson"-themed idea.

While appearing on Lopez Tonight, Kim addressed O'Reilly's comments telling George Lopez:

    "I thought the shoot was all in fun, we had a good time. Everyone is entitled to their own opinion on it. But we were just having a good time. The amazing creative team at Elle magazine obviously thought it was a great shoot and so did everyone. Everyone's loved it. It was all in fun."


Kim, who admits that Biebs "definitely has this swag to him," wanted to make it clear that she has never pursued the young singer. However, she did add, things would be different if he were of "legal age."

Now THAT oughta put a little spring in his step!

Check out behind-the-scenes footage of the sexy shoot below.