The star won the 'Best Leading Actress' prize at Radio City Music Hall for her turn in A Little Night Music on Broadway.
When picking up the gong, Zeta-Jones pointed at her husband Michael Douglas and said: "See that man there? He's a movie star and I get to sleep with him every night."
According to Sky News, she later said: "It wasn't the most elegant thing to say, was it? I was so caught up in the moment I don't think I knew what I was saying. I had no control of what was coming out of my mouth.
"Standing up there I felt speechless, but obviously I said something, but it was such a surprise that my brain didn't really connect to my mouth."
She added: "What I said about Michael was heartfelt. Although thinking about it now I can't believe I said something as crass as that.
"Boy, I could have said something worse and then I'd really be in trouble. Mind you, the problem with saying that I get to sleep with Michael every night is that it was done on television and it's on tape forever."
