Forbes Celebrity 100: The world's most powerful celebrities

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Oprah Winfrey takes back her crown while pop chart phenomenon Lady Gaga catapults to No. 4 on this year's Celebrity 100.

LOS ANGELES -- Pants-less pop stars, late-night warriors and sexy vampires spiced up the fame game last year, with Lady Gaga, Conan O'Brien and Twilight superstars Kristen Stewart and Robert Pattinson joining the Forbes Celebrity 100 list for the first time.

But despite their impressive debuts (Gaga hit the list in fourth place), Oprah Winfrey is the year's big winner. After being ousted by Angelina Jolie on last year's list (Jolie dropped to No. 18 this year), the Queen of all Media takes back her crown on Forbes' annual ranking of the world's ultra-famous. Winfrey earned $315 million over the past 12 months.

(Scroll down to see a list of the top 10 most powerful celebrities.)

The talk-show host choked up when announcing that this coming season of her flagship chat fest would be her last. The news helped the self-made billionaire garner more press mentions than any other member of the Celebrity 100. Winfrey earns big thanks to The Oprah Winfrey Show as well as her magazine, popular website, radio channel, TV specials and movies like the Oscar-nominated Precious. Looking ahead, her Harpo production company, which launched the careers of Dr. Phil, Rachael Ray and Dr. Oz, will introduce interior designer-turned-talk-show host Nate Berkus this fall.

Months later, the mogul will roll out the lifestyle-themed Oprah Winfrey Network in partnership with Discovery Communications.