Oscar-winning actress Charlize Theron hates playing roles which require her to fluctuate her weight.

Theron had to shed two stone to play a cancer sufferer alongside Keanu Reeves in Sweet November, as well as adding bulk to give her Oscar-winning turn in 2003's Monster.

And the star hates changing her natural body shape, admitting she felt "uncomfortable" after losing so much weight.

She says, "I went down to a size 6 and I just felt completely uncomfortable.

"I remember being cold and wrapping my arms round my body and feeling ribs and bone. I felt totally unsexy."