It had been reported last week that Mel's plans for her judges' houses had been left in tatters after ALL of her Spice Girls bandmates said no to joining her.
However now Emma has come to Mel's rescue and agreed to join her in Cancun, Mexico to help whittle down the Boys in her category for the live shows.
An insider told The Sun newspaper today: “Mel was desperate to get at least one of the Spice Girls to join her.
“She is not one for giving up and badgered Emma. Mel is thrilled she will now have her pal with her."
Earlier this year, former X Factor judge Tulisa joined Louis Walsh in Bermuda with the Groups while Cheryl Cole was joined by Tinie Tempah in France with the Girls, after Will.i.am was 'too busy' to join her.
Simon Cowell is set to fly out to Las Vegas with the Overs category, where he's set to be joined by Sinitta, as always.
The X Factor continues this weekend with the Arena auditions, with the judges' houses section airing next month.