No, she isn't sick. The 33-year-old actress was tired of hating her reflection in the mirror. So she went on a crash diet and the results are amazing!
click the link to see what she looks like now.
Sidibe says she always suffered from poor body image.
“My first diet started when I was six-years-old. I’ve never been a small girl,” she told Oprah Winfrey in 2009. “One day I had to sit down with myself and decide that I loved myself no matter what my body looked like and what other people thought about my body… I got tired of feeling bad all the time. I got tired of hating myself.”