Lady Gaga has officially taken over the world! Forbes Magazine rated her the Most Powerful Celebrity over mogul Oprah Winfrey. Winfrey who is celebrating the final episode of the Oprah Winfrey Show after 25 years on television made $290 million last year. Gaga raked in $90 million and took the number one spot on the coveted list! Gaga’s ten million followers on Twitter helped her snag the spot!