Christina Aguilera : Biography

Born Christina Maria Aguilera on December 18, 1980, on Staten Island, her parents were of Irish and Ecuadorian stock and her father's military career meant the family moved quite a bit during her childhood. They eventually settled in Philadelphia. By the time she was five, Christina knew all the songs from The Sound of Music and performed them at neighborhood block parties. It wasn't long before Christina Aguilera was performing the National Anthem at professional sporting events in the area.
When Christina Aguilera was 10, she went to an open audition for The Mickey Mouse Club. She didn't make the cut, but two years later Disney invited her back. She got a part and became a Mouseketeer working with now-famous co-stars like Britney Spears, Justin Timberlake and JC Chasez (of *NSYNC ) and Keri Russell from Felicity. Christina Aguilera sang, danced and performed her heart out during her two years on the show.
Britney Spears : Biography

Britney born December 2, 1981, in Kentwood, Louisiana. The daughter of Lynne, an elementary school teacher, and Jamie, a construction contractor, Spears auditioned for the Disney Channel’s Mickey Mouse Club at the age of 8. Producers for the show decided she was too young, but one was impressed enough to help her find an agent in New York. Accompanied by her mother and younger sister, Spears lived in Manhattan for the next several summers, studying at the Professional Performing Arts School.
Spears was only 17 when she reached #1 on the U.S. pop music charts with her 1999 debut album ...Baby One More Time.
Spears married Kevin Federline, a professional dancer, in 2004. The ceremony was held on 18 September, but papers formalizing the wedding weren't filed until October 7th. It was the first marriage for Federline, who previously fathered two children with Moesha star Shar Jackson... Spears and Federline had their first child, a son named Sean Preston Federline, on 14 September 2005... Spears married childhood friend Jason Alexander in an impromptu ceremony in the Little White Wedding Chapel on the Las Vegas Strip in the early morning of 3 January 2004.
Shania Twain : Biography

Eilleen Regina Edwards was born on August 28, 1965 in Windsor, Ontario to Clarence and Sharon Edwards. Although her heritage is Irish and French-Canadian, she was raised in the Ojibway Indian culture because when she was six years old, her mother remarried full-blooded Ojibway native, Jerry Twain. Jerry Twain adopted Eilleen, making her legally 50% native. She has two sisters, Jill who is two years older, and Carrie-Ann, who is three years younger. She also has two younger half-brothers.
Shania Twain married producer, Robert John Lange (Mutt), on December 28, 1993. Their son, Eja, was born on August 12, 2001. Shania and Mutt now live in Switzerland, where Shania is learning to speak French. Shania also owns a cottage near the town of Huntsville in the Muskoka region of Ontario, Canada. Notice that Shania uses her legal, married name, Eilleen Lang, in the credits for Up!, instead of Shania Twain.