How can a 26 year old girl make her breasts grow?

Play with them.. :P No seriously.. to massage your breast will stimulate the muscles and the fatty tissue... it's kinda like lifting weights...though you don't develope mass muscle tissue... And, it's also a great way to keep an eye out for any possible dangerous lumps...... The best time to do this proceedure is when you're in a nice hot shower. The hot water will also help you development.... ;P