Sunday night’s (8 November) show saw another double elimination, with Kiera leaving the competition straight away, having polled the fewest votes from the public.
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Kiera Weathers
Of her exit, she said: "I came out last night and I did me, so I'm more than happy with that.
"It's not the end, this is just the start of my journey and I've have a ball."
Mentor Rita Ora added: "I'm so proud of everything she's done to this point, and always with a smile on her face."
Mason opted to perform Boys II Men's 'End Of The Road', while Seann sang an emotional rendition of Donny Hathaway's 'A Song For You'.
However, after Simon and Cheryl voted to send home Mason and Rita voted to send home Seann, Nick dodged deciding between his acts by sending the vote to Deadlock.
It was then revealed that Seann had polled the least public votes out of the two, eliminating him from the competition.
Nick was in tears at the announcement, telling Olly and Caroline: "I can't believe they were in the bottom two tonight and I can't believe Seann is going home."
The nine remaining ‘X Factor’ acts will perform once again next Saturday (14 November) at 8pm on ITV.
'X Factor': Most Controversial Moments
Emily Nakanda's Happy-Slapping Scandal(01 of06)
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Back in series four, 15-year-old Emily Nakanda was one of the early favourites to win the show, but had to back out, after a video emerged showing her violently attacking another teenage girl.Reports at the time said Emily was asked to leave the competition by producers, or risk being axed. (credit:Ken McKay/Rex)
Frankie Cocozza Oversteps The Mark(02 of06)
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Frankie's hard partying during his time on 'X Factor' in 2011 was well-documented, but it ended up costing him his place in the competition, when he broke one of producers' "golden rules", later reported to have been the use of class-A drugs. (credit:Beretta/Sims/REX)
Grimmy And Rita Join The Show(03 of06)
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The addition of Nick Grimshaw and Rita Ora was - at least initially - a controversial one, with some critics wondering whether either of them had the relevant experience to find the UK's hottest talent. (credit:ITV)
The Six Chair Challenge(04 of06)
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The 'Six Chair Challenge' has been a sticking point with 'X Factor' viewers since its debut in 2013. Many have branded the final stage of Bootcamp cruel, with some hopefuls gaining a place at Judges' Houses only to have to give it up later, but Simon Cowell clearly doesn't mind, as it's back for 2015. (credit:Tom Dymond/Thames/Rex)
Louis Walsh Pushes Dannii To Breaking Point(05 of06)
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Louis repeatedly accused Dannii of stealing one of his acts' songs back in 2008, resulting in the 'Put The Needle On It' singer breaking down in tears live on air, and having to vacate the panel at one point to gather herself.Simon jumped to Dannii's defence, telling Louis: "Dannii made the right choice, Louis, if you don't like it, tough."You're always whining and complaining. You two have to kiss and make up." (credit:ITV)
Gamu-Gate(06 of06)
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A turning point for Cheryl's popularity with the British public came when she was met with a backlash for putting both Cher Lloyd and Katie Waissel through to the live shows, over viewers' favourite Gamu, despite neither of them finishing their performances at judges' houses.Reports later suggested that Gamu could be facing deportation from the UK - adding to the backlash against Cheryl - though the aspiring singer was later insistent this was not the case. (credit:Ken McKay/TalkbackThames/Rex)