Lance Armstrong
Before he was the controversial biker that we know today, Lance Armstrong was just another kid running around (or rather, biking around) the streets of Plano, Texas. Upon his birth in 1971, he was given the full proper name Edward Gunderson. He didn't get to revel in the name for long though. Once his mother Linda remarried, he was still a very young child. Terry Armstrong, his stepfather, legally adopted him and gave him the name he has today.
Liz Phair
Singer Liz Phair is a child that grew up with nonbiological parents. She was born to her biological mom in New Haven, Connecticut, but was adopted by Illinois couple Nancy and John Phair, who raised her and her adopted brother in their home state. In 2006, Phair told Women's Health, "My parents were very responsible. They said, 'We wanted you more than anything in the whole world.' They were perfect about it."