(PHOTOS) 'The X Factor' Judges' Homes: Meet L.A. Reid's Secret Weapon ... Rihanna!
Meghan Carlson
Meghan Carlson
Senior Writer, BuddyTV
Tonight on The X Factor, the top 8 from each category -- girls, boys, over 30s and groups -- will travel to the four judges' (now mentors) homes for private training and another round of auditions and eliminations.

In another similarity to NBC's The Voice, each judge will be joined by a superstar guest mentor who will help train and inspire the X Factor contestants toward their own superstardom ... and that $5 million prize.

But none of the Voice judges could claim that they actually made their guest mentors, in a sense. L.A. Reid can, because he's decided to bring along pop/R&B star Rihanna, who signed with Reid's Def Jam Records six years ago, and the rest is multi-Grammy, multi-platinum, multi-million history.

Check out more photos of L.A. and Rihanna with his eight X Factor boy hopefuls:

During the episode, we will find out which stars Paula, Nicole and Simon have recruited to help with their recruits. Rumor has it that Pharrell Williams, Mariah Carey and Enrique Iglesias will fill those spots ... but which star for which X Factor judge?

Find out when The X Factor Judges' Homes Round airs tonight, Wednesday October 12, and continues Thursday October 13, from 8 to 10pm on FOX.

(Images courtesy of FOX)