I'm 116 lbs i don't want to lose weight but want to tone stomach n butt what's the best way. ?

Some options...: Body sculpting sounds promising but the "pear" body type preferentially stores fat around the hips; "apples" store it around their waist. There are however lots of great toning exercises available (on cable TV, local gyms, community colleges, hospital wellness programs) that you may want to explore. Keep in mind your goals & exercise tolerance are unique, so an individualized approach is best.

Toning: To tighten ab's: crunches, reverse crunches, exercise ball crunches, pelvic thrusts, lying leg raises, side bridge & “bicycling” exercise on back. Engage in regular aerobic exercise (i.e. running, swimming, Nordic track, bicycling, kickboxing, walking, cross country skiing, hiking, etc.) Exercises to tone your butt include Plie, Dumbell Squats, Squat w Kick-back, Single leg front raises, toe taps