How can i make boobs firmer and perkier naturally?

Muscle yes, boobs no: If you build up the pectoralis(chest) muscle underneath the breasts with exercise, the breasts will appear "perkier" and higher on your chest wall. Firmer, naturally, is another problem as breasts are composed of glandular and fat tissue in which fat is often "squishier"(soft). Thee are no other "natural" methods, and plastic surgery is the only other option "unnaturally".