Jennifer Hudson would agree to pile the pounds back on for the right movie role.

The Oscar-winner shed a huge amount of weight and is now encouraging fans to get fit as a spokesperson for diet giant WeightWatchers.

She has released a book detailing her battle with the bulge, entitled I Got This: How I Changed My Ways and Lost What Weighed Me Down, but admits she would consider giving up her slim new figure if it was required for a film role.

When asked if she would gain weight for a part, she replied, "When I do films, it has to be led by something through me - like my passion for it. I just don't want to hop into anything. So if I commit myself to something, then it'll be worth it no matter what character it is."