Tuilsa Contostavlos eats two dinners before filming 'X Factor'.
The talent show judge consumed two main courses "every night" during the Judges' Houses stage of the competition in St Lucia, according to 'Xtra Factor' host Caroline Flack, who can't believe the brunette beauty is "so tiny" because she has a huge appetite.
Caroline said: "She eats two dinners. And she eats so slowly. The whole table will have finished and she'll still be on her dinner. Her first dinner, I mean; she's got the second one to come.
"She did it in St Lucia every night. I have photographic evidence. And she's still so tiny!"
Caroline, 32, insists the 24-year-old singer is a "real girls' girl" and often looks out for the TV presenter in a motherly way, despite being eight years her junior.
She added: "Tuilsa is one of the girls you feel would always have your back. Do you know what I mean?
"I mean in a mother hen way, she looks out for you. She's very soft, much more than you'd think. She's a real girls' girl."