Dublin-born X Factor hopeful Janet Grogan has revealed that she would pick "nutty" Sharon Osbourne to be her mentor on the show.

Speaking on The Eoghan McDermott Show on 2FM, Grogan said: "I'd take any of them, but I always thought that I would get Sharon if I got that far.

"She's a worldwide, top music manager and I think she's so much fun, and so nutty and that's the kind of personality I gravitate towards."

The 28-year-old lifeguard initially auditioned on the show in 2014 and made it to the Six Chairs stage of the competition, but Simon Cowell swapped her for another singer.

He later tweeted that he had made a mistake, and it was that tweet which spurred Grogan on to try out for this year's competition.

However, Grogan thinks that being dropped from the show two years ago might have been a blessing in disguise.

"I dealt with it better than people thought I did, but it was still devastating," she said. "But look everything happens for a reason, and I obviously wasn't meant to get it that year because I'm back this year, so I'm happy."

The singer also admitted that she decided not to audition last year because of the re-jigged judges line-up, saying she "didn't love that Louis [Walsh] was gone".

She added: "But I also wasn't ready in myself, and now I think I am."

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On Saturday night's show, viewers saw Grogan bowl over the judges with a rendition of Zayn Malik's Pillowtalk.

All four judges voted her through, with Louis Walsh wasting not time in reminding Cowell of his mistake in 2014.

"I was always praying you would come back into the audition room," said Cowell. "You've got more confident; you've kind of got a glow about you. Your voice is stunning."

"You're a really strong singer and you've got a really distinctive sound," said fellow judge Sharon Osbourne. 

"I'm so happy that you came back," added Nicole Scherzinger. "I love your voice; I just dig you."