The 25-year-old beauty - who called off her marriage less than a week before the planned event yesterday (18.06.11) - felt she needed to "get away" and enjoyed a break with a group of friends in the notorious gambling city.
She said: "I'm doing OK. I just had to get away. Today is the day and I just had to get away. I'm going back tonight so I just wanted to get away for the day."
Discussing her marriage, the Playboy model said she felt she had to call it off because she wanted to be "true" to herself.
She added to People.com: "I just knew when it was getting close it wasn't fair to Hugh and wasn't fair to go through with it. I wanted to be true to myself and be true to what was best for everybody."