I have short nipples. Will the use of a nipple shield help elongate my nipples ?

I've read that many experts think that nothing needs to be done if you have flat and inverted nipples as most of the time, they perform their job as well as "normal' nipples once breastfeeding begins. But if you do need that extra help, breast shields can assist in breastfeeding but I don't know if it will help elongate them in the long run. My friends told me that drawing out the nipples with a breast pump immediately before nursing helps. Pump a few times and give baby the nipple before milk starts flowing out. Again, this method will help draw the nipple out a little bit more but I am unsure if prolonged usage will elongate the nipples per se.