sexymeI88, without wishing to sound patronising you in any way, you may eat healthy food like lots of fruit and vegetables, grains and nuts in moderation. Avoid meat, sugar, smoking, drinking alchohol. Also, proper rest, exercise, less stress and ... more sex!!! All the things that you surely are aware of.
Human body has an amazing capacities to regulate itself when it gets the right fuel.
And another thing: specific massage on the buttocks & lower body (and all over) is proven to reduce body fat.