Since then, Nicole Scherzinger has joked that she is solely responsible for One Direction's success. So when we spoke with the singer at the launch of this year's X Factor, we couldn't wait to hear whether she'd been in contact with the boys.
Nicole laughed: "Those little b****rs! I haven't received thankyou flowers from them yet! I'm waiting!"
However, she went on to say how proud she is of the success One Direction have achieved since their time on the show.
She said: "It's crazy to see how massive they are. They just performed at the Olympics?! And it feels like just yesterday that we were auditioning them and I was like: 'Let's put them together!' It feels wonderful to have had a helping hand in that."
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We also couldn't resist finding out whether her new X Factor role would mean more time for Nicole to spend with boyfriend Lewis Hamilton.
Despite looking a bit uncomfortable at the mention of his name, Nicole said: "Well, hopefully. But obviously the job takes a lot of my time up and unfortunately I believe that a lot of the shows are during the race weekends. So we'll do our best."