Spice Girls star Geri Horner was once caught eating a McDonald's topless by TV presenter Andi Peters

Emma's co-host Jamie Theakston asked: "Which Spice Girl did Andi Peters walk in on whilst she was eating a McDonald's topless?"

Mel C answered: "That's got to be Geri, she's always got her boobs out, this one."

Emma then said: "Geri!"

Mel B hilariously interjected: "You are a bit of a nudist, you always have been."

And Emma joked: "She's always been a nudist, she's always got her kit off!"

Admitting her penchant for nudity, Geri confessed: "I'm just comfortable, I don't see it as, like, nakedness. I'm just comfortable."

The 'Mama' hitmakers - who will be going on tour without fifth member Victoria Beckham - decided to air Geri's dirty laundry even further when they admitted she wears the biggest bras out of the 90s pop group.

Jamie asked: "Which Spice Girl wore the biggest bras?"

Mel B said: "Geri, Ginger!"

Geri added: "Me, I know, boulder holders, you know, like granny bras. I'm actually Granny Spice!"

Jamie then jokingly asked: "Do you need to reappraise the nicknames for the new tour?"

Prompting Geri to say: "Do you know what, nothing's changed. I've always been granny spice. I like biscuits in my handbag, nothing's changed."