Heidi Klum will return to the runway in December

Aiming to lose the pregnancy tummy and get back in shape for the upcoming show, Heidi undergoes a strict diet.

Supermodel, Heidi Klum, never seems to rest. As soon as she gave birth to her fourth child, this 36-year-old model began preparations for participating in the traditional Victoria's Secret fashion show, scheduled for the next month. Heidi has a daughter from her relationship with Flavio Briatore and two sons from the relationship with Seal.

Aiming to lose her pregnancy tummy and get back in shape quickly, Heidi underwent a strict regime of exercise and diet.

- Heidi replaced carbohydrates, sweets and fruits with egg whites, spinach salads, and grilled tuna. She will try to impress everybody with her impeccable appearance. Therefore, she exercises twice a day - revealed a source close to the model.