The Hills star was linked to the ABC competition last month, however it was speculated that bosses at her MTV reality show were unhappy about possible scheduling conflicts.
Speaking to Just Jared, she said: "I was supposed to do it! MTV didn't want to let me do it because of the filming schedule.
"They didn't want it to interfere with their schedule. But you know what? Maybe next season!"
The 24-year-old recently confirmed that she would be leaving The Hills at the end of the fifth season to pursue other projects.
Credit: Digital Spy