It has also been revealed that the Saturday show will have a 'Love & Heartbreak' theme.
Last year, the second episode had the same theme and featured Little Mix singing 'I'm Like a Bird', Frankie Cocozza covering 'Red' and Marcus Collins performing 'Russian Roulette'.
Swift is expected to perform her single 'We Are Never Ever Getting Back Together'.
Former X Factor runner-up Ferguson is also scheduled to promote her latest track 'Backtrack', which is released on Sunday (October 14).
first contestant to be eliminated from the singing show last night, losing out in a dramatic sing-off with Rylan Clark.
The X Factor Live Show continues next Saturday (October 13) at 8.20pm on ITV1.
New! Digital Spy breakfast show - watch Anna Williamson discuss the day's biggest stories including The X Factor, Homeland and Leona Lewis: