The model, who gave birth to daughter Sophia Ruby a week ago, insisted that she is "sick" of wearing stretchy clothes.
She told Radio 1: "It's got to be done! I'm sick of having Primark leggings on and big stretchy lycra tops."
However, sources have previously claimed that the 25-year-old kept to a diet while pregnant.
An insider said last year: "Abbey's taking her pregnancy diet very seriously.
"She's always been conscious of what she eats but now she's gorging on loads of fruit and vegetables.
"She can't get enough of carbs either. She eats loads of toast for breakfast but she's also drinking lots of herbal tea and eating yogurt with granola."
Clancy recently revealed that giving birth to her baby was "horrific".