At the top of the show as Geri joins the panel, Gary insists: "No it wasn’t rivalry because we made the blueprint and then they [the Spice Girls] copied it."
Tension between Geri and Gary increased when the duo argued over a girl group.
The It Girls performed Stop by the Spice Girls, with Geri remarking: "Oh my god I’m so excited! I might have to join in naturally."
She added after the performance: "Ok, you’ve definitely got potential."
But Gary blasts: "There’s barely a voice amongst you actually."
However Geri hits back: "Can I just…sorry to interrupt... Not everybody in Take That could sing, sorry, I’m just being honest.
"Gary, when I first started I could not sing, I can sing now. Two of your members could not sing."
Louis quips: "Hey Geri, not everybody in The Spice Girls could sing."
Gary tells her: "Geri, don’t even go there!"
Meanwhile staying out of the all the arguing, Tulisa remarks off stage: "Gary and Geri are having a little battle of the bands, a little bit of rivalry going on."