Emma Bunton has reportedly joined Simon Cowell for the 'The X Factor's Judges' Houses round this week.

Emma Bunton

Emma Bunton

The show boss has already recruited Mel B to help him pick out the three contestants he wants to take through to the live shows, but it seems one Spice Girl isn't enough as he's now pulled in her band mate to help them get things just right.

According to the RadioTimes.co.uk, the blonde bombshell - who was known as Baby Spice in the band - flew out to Simon's mansion in Los Angeles, California, earlier this week to help him and Mel put the finishing touches on his group.

And the 40-year-old singer certainly added fuel to the fire on Thursday (15.09.16) night when she uploaded a photo of her knocking back wine with her girl friend on Instagram.

She accompanied the boozy photograph with the caption: "Can't sleep #L.A #champagnefrommelb (sic)"

This isn't the first time Emma has been involved in the singing competition as she also helped Mel put together her final three when she was a mentor on the show two years ago.

Meanwhile, Mel may not have been chosen to sit on the panel this year alongside Simon, Nicole Scherzinger, Sharon Osbourne and Louis Walsh but she's certainly had a lot of involvement as she was pulled in as a guest-judge recently.

In scenes that aired last weekend, the 41-year-old bushy-haired beauty stepped in for Nicole after the Pussycat Dolls singer was pulled back to the US for another work project.