She told the MailOnline website: ''We've talked about it. Victoria doesn't want to, which we completely understand. We are so proud of her and her incredible foray into fashion, it's incredible what she's achieved as a designer.''
She added: ''The four of us could consider it maybe. We have Victoria's blessing to do that.''
Victoria previously insisted that she would never get back together with the girls after they reunited for a sell-out 2008 world tour, 'The Return of the Spice Girls' and then again to perform at 2012 Olympics in London.
Meanwhile, Mel is preparing to release her upcoming single, 'Cool As You,' and hopes to continue performing either alone or with the Spice Girls for the rest of her life.
She said: ''My number one love is performing and I want to be doing this forever. My current priorities are my spring/summer tour with Jules Holland and working on my own album.''
The brunette beauty is a single-mother to daughter Scarlett, five, and admitted it can be ''exhausting.''
She explained: ''Scarlett is going through the phase of waking up a lot in the night but she is so wonderful and great company.''
His new album Underneath It All is out now.