Rihanna, Lady Gaga, Megan Fox and Susan Boyle are just a few of the characters that drove the world's celebrity obsession in the first half of 2009.

This mini celeb countdown features the top 50 celebrity articles and innovations so far this year. The report is a crowd-filtered ranking based on TrendHunter.com monthly traffic (several million monthly views) and our celebs trend database, which now has more than 3,861 celebs trends.