Mel C claims the Spice Girls all still live up to their famous nicknames.
The singer, who was christened Sporty in the band's heyday, says while she and the rest of the girls - Victoria 'Posh' Beckham, Emma 'Baby' Bunton, Mel 'Scary' B and Geri 'Ginger' Halliwell' - have matured in the past nine years they still have their distinctive personalities.
Mel C said: "Mel B isn't as scary as she used to be, she's definitely mellowed somewhat. But she's still very feisty. Ginger is a little bit lighter now, her hair is a little bit more golden. Baby's always going to be the baby, she's the youngest. And Victoria is very posh."
Mel C, who was initially reluctant to reform the band, is now really looking forward to the girls' reunion tour, which starts in Vancouver, Canada, on December 2.
She said: "This is our final farewell. We wanted an opportunity to get together to really celebrate everything we've achieved and give a great big thank you to our fans.
"We just want to make this the best pop show that a British band has ever put on."
Before the world tour starts, the band will appear at a fashion show for lingerie chain Victoria's Secret, in which they will be wearing some of the firm's sexy underwear.
She added to US TV show 'E!': "We're going to be performing one of our old songs and one of our new songs, 'Headlines', and it's going to be very beautiful.
"We're hoping to get ourselves into some Victoria's Secret underwear for the show."
The girls have signed an exclusive deal with Victoria's Secret to sell their greatest hits album exclusively through the lingerie chain.