Nicki Minaj thinks Mariah Carey has "met her match" in her. The 'Starships' singer has admitted there is more than one diva on the judging panel of 'American Idol' following her explosive bust-up with the star last month, during which she hurled profanities at Mariah. Speaking in her new reality show 'My Truth', Nicki revealed: "I think Mariah met her match this time, and I don't think she was expecting to meet her match. "I'm super nervous and anxious for the first day on 'American Idol'. I'm still second guessing my decision. I'm probably going to be a hundred times guessing this decision because I'm human. It's a big job." The 29-year-old star still struggled to find her perfect look and rocked up late for her first day on the job to join Keith Urban, Randy Jackson and Mariah on the panel. She moaned: "Am I going to be an hour late or two hours late? Do they know literally how embarrassing this is. That I am going to be late for my first day."