Getting into "bikini body" shape requires working on the muscle as well as trimming off some fat. Do that and you will look a lot better in any bikini.
One of the best things you can do is to go with a real muscle building routine, the same type the guys use, instead of a "ladies" routine.
Here is a challenging muscle building workout you can use three times a week to build a better bikini body.
Dynamic full body warm up
Squat - 2 x 10
Lunge - 3 x 10
One leg calf raise - 3 x 10
Bench Press - 3 x 10
Seated Dumbbell press - 3 x 8
Lat Pulldown - 3 x 8
Incline dumbbell curls - 3 x 8
Cable pushdown - 3 x 8
Ab 1/2 crunches 1 3 x 10
Following the gym workout, take a jaunt outside and perform:
Sprints - warm up run, 3 sprints of 50 meters
Jog 2 miles
Perform this program three times a week with at least one day rest between workouts. You can have some variety for the cardio portion and if you want to do a bike ride or something similar in place of the run on some of the sessions, go ahead.
Use a weight load that is challenging enough so that the final three repetitions are tough to complete. Drink a lot of water during the training and be consistent.