I guess it's actually possible to make one taller though it's expensive (and IMO sounds a bit creepy ). Those bones in your legs can be broken and little by little pulled apart so that new bone tissue will fill the gap or something. I was like when our biology teacher told us that legs can be lengthened even 12 cm (which might look pretty weird unless one has very short legs!).In this day and age, you can buy your hair colour, your eye colour, your breast size, your butt size etc etc etc but you simply cannot buy height!