This is a great one for anyone with short or thin hair. Kat Lewis, the head of education at Bellami, shared a quick and easy tutorial for the same pumped-up ponytail, but using extensions to add volume. Simply pull the hair at the crown of your head into a high ponytail, and attach your extensions, like the Bellami Silk Seam Clip-In Hair Extensions ($120) at the roots. Then, gather the rest of your hair around it, secure it with a ponytail holder, and fluff.