The Black Eyed Peas singer said she gave up exercise and binged on fried food in an attempt to put on weight for the part.
She told Now: 'I actually gained 17 pounds. It was easy to put it on, it was fun and I loved it! I ate fried foods, everything, I just didn't work out at all. I didn't care, I didn't even think about it. It was very hard to take off. It was the longest period of time I'd ever done that since I think high school. When I started working out again it was a big deal and it took me a while mentally to get back into that routine. So now I have a trainer which is great and keeps me motivated.'
