Michelle Obama is denying rumors that she's pregnant. The First Lady, 44, known for her super-toned biceps and abs, has been the subject of press speculation that she was developing a "baby bump." "I was like 'baby bump?' As hard as I work on my abs," Michelle told Oprah Winfrey in April's O Magazine. "Here's the scoop: Not pregnant. And not planning on it." (Photo: WENN)