What exercise should I use? except from seat ups?

I want remove my body fats specially in my tummy, I want to have a sexier abs..
I need I kind of exercise that is easy to do all by my self that's why I don't want seat ups.
and please give a direction on how should i do that kind of exercise.

For those who is confuse about my gender.. i'm a girl and my username is not my real name