Michelle Obama was crowned Forbes Magazine's Most Powerful Woman of 2010, RadarOnline.com has learned, as the First Lady edged other big names such as Oprah Winfrey (#3), Hillary Clinton (#5) and Lady Gaga (#7) for the honors.

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High-profile celebs spiked in this year's ratings as opposed to a year ago, when German Chancellor Angela Merkel captured the title, while First Lady Michelle Obama was ranked #40, with Winfrey camped next to her at #41.