Staying InX Factor 2015: Louis Tomlinson 'to join Simon Cowell for Judges' Houses'The One Direction star looks set to join Simon CowellHired: Louis Tomlinson is set to help out Simon CowellPA Emma Powell1 October 2015One Direction singer Louis Tomlinson will join Simon Cowell for the Judges’ Houses segment of the X Factor, according to reports.Tomlinson, 22, will replace Cowell’s regular aide Sinitta for the segment which sees the judges choose the final line up for the live episodes.It ends months of speculation over who will join Cowell with Tomlinson and former judge Louis Walsh linked to the job.The Daily Mirror also reported that Meghan Trainor is set to join Rita Ora while Nick Grimshaw will have a helping hand in Mark Ronson and Jess Glynne will aide Cheryl Fernandez-Versini.X Factor 2015: Manchester Auditions 1/8 It is yet to be confirmed where the judges will be taking their contestants, but Grimshaw is rumoured to be taking his to Oldham in Manchester while the others may be heading somewhere more exotic.Read MoreCheryl Fernandez-Versini hits back at weight comments Simon Cowell’s got the X Factor as he’s swarmed by female fansThe X Factor: Viewers unimpressed at Grimmy's boot camp absenceThe X Factor continues with the first episode of the Six Chair Challenge on Sunday, October 4 at 7pm on ITV.MORE ABOUTX Factorlouis tomlinsonRita OraSimon CowellNick GrimshawCheryl Fernandez-Versini