Yes if u dont have much breast tissue they go under the muscle instead of over.
not sure what implant size they will offer I no u cant go to big cus obviously u dont have lots of space in there & dont want to end up with big boobs covered in stretch marks.
I’m 5ft 7″ & size 10 think at the min mine look natural size.
u need to make sure your surgeon knows exactly what size u want & wether u want to look a D/DD or measure a D/DD cause from what I’ve been told implants measure bigger than they look.
sorry I’m not much help xx