Nicola insists that she and the rest of the girl band - which also includes Cheryl Cole, 28, Kimberley Walsh, 30, and Nadine Coyle, 26, - are always there for one another when they need support and all of them are there for Sarah, 30, now she has left rehab after being treated for depression and alcoholism.
Roberts, 26, told Seven Days magazine: 'We support each other in everything we do and we are all there for her. Whenever any one of us needs an extra bit of TLC we are ready and we jump to the occasion, and Sarah is good, she's OK.'