The 31- year-old singer struck up a strong bond with the brunette beauty after they joined the chart-topping band Girls Aloud in 2002 and their friendship has been growing ever since with Kimberley helping Cheryl through her messy divorce with Ashley Cole, which was finalised in 2010.
Speaking to HELLO! magazine, she said: ''I'm very protective of Cheryl and if she hadn't wanted me to address her split from Ashley [in my new autobiography 'A Whole Lot of History'] I wouldn't have done. But she was quite happy for me to speak about it from my side. In fact, she encouraged it.
''All I could really do was be there for her, physically, 24 hours a day. I'd been through it with my sister, so I knew what someone's mental state is like when they've had that sort of shock and I didn't want her to be on her own.
''What was frustrating was that I couldn't understand why it happened, so I couldn't say, 'Well maybe it's because...' I couldn't help her in that way because I couldn't make sense of it either.''
The blonde beauty is confident her and Cheryl will remain friends for a long time and can't wait share their memories with their future children.
She explained: ''Cheryl's in a great place now. She lives closer to me when she's here in the UK and that's great... We're friends for life and often joke about how we'll be reminiscing to our kids and grandkids in year to come about how were in a band and how we climbed a mountain together.''
The 1969 session, including the only known recording of 'Sunshine Woman' by the band, will be included on a re-issue of 'The Complete BBC Sessions'...
The 55 year old actor joined Chris Martin and co. on stage in New Jersey to perform 'Earth Angel' and 'Johnny B. Goode'.
Bjork Digital comes to London's Somerset House in September, along with a single live show at the Royal Albert Hall.
Kim Kardashian released an audio excerpt from a phone call between Kanye and Taylor Swift over the lyrics of 'Famous' - but if it was recorded...
There's very much a strength of conviction in remaining what you were, but arguably more so in becoming what you want to be.
The BBC drama starring Aidan Turner returns to BBC One on September 4th.
Guns N' Roses were detained at the Canadian border last week for gun possession but they're adamant the weapon didn't belong to them.
Ethan and Jaden are two street kids with a close knit group of friends, Amy,...
Based on the books and animated TV series, this far-too-childish 3D comedy is pretty painful...