Dang girl! Selena Gomez 21st Century marketing

Selena Gomez took to Twitter to promote her Dream Out Loud clothing collection "@selenagomez At The Grove Kmart checking out Dream Out Loud. First five who go to Customer Service & show this message retweeted/liked will shop with me!"

This is how you utilize Twitter, Facebook, Pinterest, Instagram and all 21st Century marketing. A celebrity, a call to action and sales, sales, sales.