Cheryl Cole says Kimberley Walsh is her "safety network"
The pop star insists she is close to all her Girls Aloud bandmates but always goes to Kimberley if she has a problem because she will always give her a hug.
Cheryl - who has endured a tough 2010, splitting from her soccer player husband Ashley Cole and contracting potentially fatal disease malaria - said: "I have a lot of amazing friends, but the girls - Kimberley, Nicola (Roberts), Sarah (Harding) and Nadine (Coyle) - they`re like my sisters because we`ve been through so much together for so long. They just become your best friends. But Kimberley is my safety network, she`s the one that gives you a good hug when you need it."
Despite the turbulent last few months, the 27-year-old singer insists she has taken a valuable lesson from the upheaval in her life - to live in the moment.
Referring to her hit single `Promise This`, Cheryl said in a video interview on YouTube: "I promise to take each day as it comes, that`s what I`ve figured out. You just have to live each day and live in the moment instead of worrying about tomorrow. I`m always thinking about next week or next month but I need to live in the day."