Cheryl has made a rare return to Instagram to support her former Girls Aloud bandmate Sarah Harding, who is battling cancer.
The singer rarely posts on the site these days but shared a message of support after Harding tweeted fans to say that she was fighting hard following her breast cancer diagnosis.
Harding also revealed that she was writing a book about her life, sharing a snap of what appears to be the cover.
Cheryl posted a grab of the cover image on her own Instagram Story, with the message: “Love you.”
“Well this is going to be an interesting read,” she added.
Fellow Girls Aloud stars Kimberley Walsh and Nicola Roberts both wrote on Instagram that they were “so proud” of Harding.
Nadine Coyle posted: “My lovely Sarah has a book coming out and I can’t wait to read what she got up to when I was getting up to it with her!!!”
She added two red heart emojis to her post.
Harding revealed in August that she had been diagnosed with breast cancer and that it had spread to other parts of her body.
She updated fans this week, posting a message on Twitter saying she was fighting as hard as she could.
The star, 39, said that although things were “tough right now”, the love and support from fans had been “a huge source of strength”.
“I can’t deny that things are tough right now but I’m fighting as hard as I possibly can and being as brave as I know how,” she added.
Harding said penning a book about her life was giving her something positive to focus on.
Girls Aloud rose to fame after winning Popstars: The Rivals in 2002 and are known for songs such as Sound Of The Underground, Something Kinda Ooooh and The Promise.
They went on hiatus in 2009 and eventually went their separate ways.
Watch: Sarah Harding ‘fighting hard’ in cancer battle