What black female celebrity could I dress up as?

A friend of mine's upcoming birthday party is hollywood themed, so we have to come dressed as celebrities. I'm black and I have long braids at the moment, though I might be able to change it depending on your suggestions. Could you also say what I could specifically wear to dress as that person, it would be best if I could just use clothes that I already have if possible. Thank you! & here is a picture of me to give an idea of what I look like :')

http://i44.tinypic.com/105vf3d.jpg[/IMG]

I'm thinking... I'm seeing Jennifer Hudson. If you search "Jennifer Hudson makeup" on YouTube, you'll find tons of tutorials where people have copied her makeup. Or maybe Ledisi or Chrisette Michelle. Have fun!