Can somebody help me i need to get rid of a gap in my chest?

i do weights gym and all sorts push ups you name it but for the past 5 months i cant seem to get the muscle gap out of my chest its just looks stupid to take my top of im scared of what people will think if i take it off i am tonned over my entire body but its just my pecs that are letting me down is there anything i can do to pull muscle into the area and make my left side even like my right please look at my profile pic to see what i mean by the muscle gaps :(