But the 38-year-old, who is author Salman Rushdie's ex, had no such concerns.
'I think I look better when I have a little bit of weight on - my breasts are fuller, and I’m curvier than when I’m at my thinnest,' she tells this month's edition of U.S. magazine Allure.
Padma was one of five models to strip for the shoot, which was entitled The Naked Truth.
She said she didn't feel worried about stripping off, and just 'exercised an extra bit,' in preparation.
'I tend to sleep in the nude,' she revealed. 'When I'm in my own personal space, I do spend time with very little on.