You shouldn't wait around for summer to try and get into bikini butt shape. The time to do it is now.
The good news is that you are not focusing on dropping weight. If you're looking to get your tummy into shape, then you will have to focus on diet and nutrition, but in order to get your butt looking good in a bikini, the focus is more on exercise.
The primary way to get your butt into shape is by doing exercise that focus on your glutes.
Don't waste time running, lifting weights above your head, or anything else. If you're looking to do one thing----lift and tone your butt---then you have to isolate and focus. That means doing exercises that hit the glutes.
Here are 3 good exercise to target your glutes and get your butt bikini ready.
You should have an exercise mat or yoga mat.
The Kickback
The Bridge
Squats
The Squat is a super powerful butt excercise, however you can do it wrong and end up focusing on your quads ( or thighs) so follow this video to learn the correct method.
If you do the work, you can get the butt!
If you want to wear something like this, then get started.