"The best news I've heard for a long time is that John Mayer is single. I wouldn't have given him a second glance, but all that changed when I saw him perform live on TV recently with his top off. I had to be calmed down!" the Daily Telegraph quoted her as telling Showbizspy.com.
"So I am putting it out there - John Mayer, I am going to hunt you down! One woman's trash is another woman's treasure!" she added.
Dannii, who has earlier been romantically linked with F1 driver Lewis Hamilton and Channel Seven Sunrise entertainment reporter James Tobin, has also revealed that she is planning to party hard when she goes on holiday to Ibiza, Spain, later this month.
"I am off to Ibiza, my spiritual home, next week for some much needed TLC with my girlfriends. It will be my last holiday until December when ''X Factor'' finishes, so I am going to make the most of it. I love to party and I will also be hitting the beach," she said.