i dont think it is possible. Once you reach a certain age, you cant grow vertically anymore.. ( you also might not wanna grow horizontally )..and beside what difference would it make to your life with just 2-3 inches? Then you might want to do something else?.. you might want to go for some plastic surgery.. its the human nature.. they're never satisfied with whatever they have. I used to grow taller too (since im 5'8) but well.. it isnt in my control... I'm whatever i got from my parents genes.
There are things like heels as people above me mentioned, but this will only make you look taller instead of actually being taller. Well.. once reached a certain age.. you are no more growing taller.
As someone once said " grow urself intelectually and not physically "
