The 30-year-old singer - who is joined in the band by Cheryl Cole, Nadine Coyle, Sarah Harding and Nicola Roberts - played down rumours of a rift with Nadine, and confirmed the 'Love Machine' hitmakers will be returning ''very much as a five'' next year.
She said: ''I get bored of questions about how things are with Nadine, but we know where things stand and we're very much coming back as a five.
''We're chatting about ideas for the anniversary but we don't know any specific details yet.''
The girl band have planned to reunite to mark 10 years since they shot to fame on TV talent show 'Popstars: The Rivals' in 2003, and as well as a tour, Kimberley admitted a new studio album could also be on the cards.
She told Closer magazine: ''The reunion might not be a one-off. We'll just have to see what happens. There's the possibility of another studio album - I'm not ruling anything out.
''As soon as we get everything in place, we'll make an announcement!''