I went under the muscle as that is what my surgeon, Dr Traynor recommenced. I know someone who went with another company but got the EXACT same size and shape enlargements as me, she was a similar weight and body shape and height to me also. She went over the muscle instead and I think mine look so much more natural whereas hers look a bit more stuck on!! I would ask you surgeon and see what they think, after all they know best! I will post some pics on my profile, it won’t let me post them in comments