Leona Lewis has gone from a size 14 to a ten after sticking to a strict detox routine for the past month.
The 24-year-old singer says she "basically ate vegetables and nothing processed", and "drank nothing but water" for a whole month.
"It wasn’t a crazy, dramatic change to my lifestyle, but I just really wanted to try it and see how I felt," she explains.
"And after being in the studio a while, I started doing shows and getting more active. I only did the detox for a little while, but it must have kick-started something in me because everyone keeps saying: 'Wow, you’ve lost weight!' and I'm like: 'Cool!'."
Leona insists she never felt pressure from anyone in the music industry to slim down, however.
"No one’s ever said, 'You need to work out more'," she says.