Before they were stars: Celebrities' past jobs

Slideshow posted in Photos | Wednesday, February 16, 2011

21 of 80: Before hitting it big as a country star, making her way through the 'American Idol' stage, and guest starring on 'How I Met Your Mother,' Carrie Underwood worked at a gas station, a hotel, a pizza place and a veterinary clinic, according to an Oprah interview. ( Photo /