Roll the second bun into a flat bun and lay it over the first bun and secure it with bobby pins in the same manner. (stylecraze.com)
If you are unfamiliar with what velcro hair tools are, they are basically a simple alternative you can use to hold your hair back instead of using bobby pins or hair bands. (storybookapothecary.com)
If your hair won't stay put, secure with a couple of bobby pins placed just behind the ears. (redbookmag.com)