Lily Allen has revealed her eldest daughter Ethel was seriously ill with a life-threatening condition when she was just 12 months old.
In an interview for BBC Radio 4's Desert Island Discs, Allen said: "I was scared of losing her the whole time."
Ethel was born with a condition called laryngomalacia - a condition which causes the larynx to collapse into the airwaves.
"It's basically a problem with the throat," Lily explained.
"She was working so hard to breathe, to just exist really, and she wasn't really gaining any weight at all.
"Because all of the food she was taking on, she was just expending the energy on this breathing process.
"When she was really, really little the doctors said she had to have an operation to correct it and then that didn't work so she had to have it again.
"And she was tiny, she'd lost so much weight and then as a result of that, because of what happened before with my previous, it was just a really tough time.
"She just had to be tube-fed for about seven months, eight months. But she's fine now, absolutely fine."
Allen added:
"All I wanted to do was just breast-feed her and to sit there in my chair with her and spend those precious hours into the night looking after your child."
Lily also spoke about how she had a stillbirth six months into a pregnancy in 2010, admitting it was "difficult to talk about it":
"When we lost our first, I remember thinking it's just so bizarre that I seem to have all these really unique experiences, you know, the highs along with the lows," she said.
"From playing on the main stage at Glastonbury to 70,000 people to losing a child, it's just, everything seemed to be extremes."