Which digitally savvy celebrities deserve to win InStyle's Social Media Awards for 2015? It's up to you to decide. From the best celeb selfie taker on Instagram to the celebrity newbie who's amassed thousands of Twitter followers in mere months, readers have bestowed high honors to social media's most important (and most fun) celebs. Find out which stars won in years past and follow your favorites on Instagram and Twitter. Then check back to cast your vote in the next InStyle Social Media Awards.