Hello all

My story:

I am a female in college and had lost about 90% of my hair between the months of March-May, now my hair is starting to grow back slowly, My whole head is covered with hair about 1 inch long (but thankfully 95% of my head is covered with hair again).

My question:

I wanted to know how long my hair has to be for me to be able to get hair extensions? How much would it cost? Will it be ok to do it? How does it work? Thanks