The Voice UK judge Olly Murs also shared a heartbreaking tribute on Instagram.
The singer admitted he hasn’t stopped crying since discovering the news of his late friend, Caroline.
The Voice coach confessed that he’d been “worried” about his “fragile sister” and revealed he reached out to the ITV star during her “toughest” times.
Olly shared a snap alongside Caroline, as he said his “heart is forever broken”.
If you have been affected by this story, you can call the Samaritans on 116 123 or visit www.samaritans.org.