The Dreamgirls star has shed more than 80 pounds (36 kilograms) since signing on as the face of diet brand WeightWatchers in 2010, but she admits her shrinking frame has become too small for her liking - particularly after dropping a little more weight for an upcoming film role.
She tells MSN's Wonderwall blog, "I think this is the final, lowest weight. I actually was just filming a movie where I had to lose 10 pounds, but I started thinking maybe this is too tiny. I still like to have some curves. I just spent the past week working my way up to my ideal weight."
And it was her love for sweet treats which helped her boost her figure after wrapping production on the unnamed film.
She adds, "I love chocolate. I ate the rest of my weight. I got to the point where I was like, this is enough. So I've gained all the weight back."