Although Oprah Winfrey‘s earnings slipped from $165 million to $77 million since last year, she is still the most powerful celebrity on Forbes 2013 list of the Most Powerful Celebrities. After two years in second place, the former daytime talk show queen has regained her powerful throne in a female dominated top 10 list, per a Chatham Daily News report. Overall, the list includes 100 celebrities . . .