Fat roll under boobs

I have this weird roll under my boobs that's either fat or skin and I don’t know how to get rid of it. It’s so frustrating!

I’m 5ft and 53kg’s so I’m a healthy BMI albeit closer to the heavier side, I’d say I’m just a ‘average’ body shape/size.

Does anyone else have this? And if you’ve got rid of it, please tell me how?! 🙏🏻