just try to wear properly fitting clothes, this will help a lot.

i tend to think that height is all genetic. my dad is 164cm n my mum 160cm. but luckily for me i managed to grow to 180cm. but my bro is only 170cm. my maternal side r pretty tall especially the men. but my paternal side r all shorter than average height. so i got more dominant genes fr my maternal side n my bro the opposite LOL