X Factor boss Simon Cowell has said his prayers have been answered after Dubliner Janet Grogan returned to audition again for the show.

The 28-year-old lifeguard made it to the Six Chairs stage of the competition in 2014 but 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.

On Saturday night's show, viewers saw her cover Zayn Malik's Pillowtalk, after which she was voted through by all four judges - with Louis Walsh wasting no 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." 

Here are just some of the reactions to Grogan's performance:

Grogan will be Eoghan McDermott's guest on RTÉ 2FM on Monday at 4pm, and this is what she had to say after the audition:

Saturday's X Factor also saw 22-year-old Derry barman Niall Sexton make it through with his cover of Sara Bareilles' Gravity.

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He was joined by another Derry man, 21-year-old photographic assistant Conor McGinty, who impressed the judges with his rendition of A Great Big World's Say Something.

Conor McGinty