Ok there's a ton of ab workouts but theres a few I do, which are one, like lying on ur backs with ur knees up and you do sit ups while also pulling your legs up. ANd two, lying on your back with your legs like in a v and holding it. while..moving ur hands up and down. hey, that's kinda my goal too. gl!!
Do situps with your legs up. It hurts like nothing but it works. I'm trying to get skinnier before summer, but I'm lazy x]