How can I lose localized fat?

[Beatrix]

Hi,
I want to lose fat in my stomach. I am overall lean and losing general weight won't help as any weight I lose comes out of the little fat I have everywhere else and I am already borderline underweight. I cannot keep on losing weight until it starts coming off of my stomach since this will most likely leave me in an unhealthy looking thin. I do have a tummy which I don't like and I would like to know what I can do to get rid of it. Procedures like liposuction are not an option for me and I would much rather lose it naturally. My mom is strict in not allowing me to lose much more weight and I do not want to lose any more other than my stomach fat. Any suggestions?
Thanks