Go big or go home!  Who doesn't love big hair?  It's the perfect beauty accessory.  We couldn't wait to share this amazing how-to video from our friends over at Birchbox. Celebrity hairstylist Serge Normant (whose fans include Blake Lively, Julia Roberts, and Reese Witherspoon) and Birchbox Co-Founder Katia share a love of BIG hair. Here, Normant shows us his trick for transforming flat hair into voluminous, bouncy hair. Talk about getting red carpet ready!