With around 2 million 3.7 million pageviews a month, a booming affiliate marketing business and more sponsorships and brand collaborations than pretty much any blogger out there, 24-year-old Leandra Medine dominates the space. And with good reason. Her Anna Dello Russo-meets-Nora Ephron take on fashion blogging is still as fresh as it was when she launched in 2010. Her next challenge? Adding more voices to the site without detracting from her own.