Please suggest me the ways of increasing height in 18..i'm interested in modelling so i need to increase my height atleast 4inches..but i'm 18 now?

Don't plan on it: Females who enter puberty at the same time as their friends stop growing taller at 16-17. If you entered puberty late, you might have more time to grow, and an x-ray of your wrist/hand could tell if you can grow more, but don't plan on 4 inches. Good nutrition,proper sleep and exercise will support normal growth, the opposite can retard it.