Kori Madison Federline has four little half brothers and sisters including Sean Preston Federline, Jayden James Federline, Jordan Kay Federline, and Peyton Marie Federline.

Sean and Jayden are the children two children of Kevin with her former wife, Britney Spears. The couple was married to each other from 2004 until their divorce in 2007.

Sean Preston Federline

Sean was born in Santa Monica, California, on Septmeber 14, 2005. He is the first child of Kevin and Britney.

The 17-year-old is the big brother of Jayden. He is three years younger than his step-sister, Kori.

Jayden James Federline

Jayden is the second child of Kevin and Britney. Jayden was born in Los Angeles, California, on September 12, 2006.

The 16-year-old is an aspiring actor known for starring in the 2011 film Kaikahu Road, written and directed by Marama Killen. Furthermore, he starred as Brad in a short movie The Mile in 2014. 

Jayden is the little brother of Sean Preston. He has an age gap of four years from his step-sister, Kori.

Likewise, Jordan Federline and Peyton Marie Federline are the children of Kevin from his current partner, Victoria Prince. The couple got married on August 10, 2013.

Jordan Kay Federline

Jordan is the first child of Kevin and Victoria. Jordan was born on August 15, 2011.

The 11-year-old is the big sister of Peyton Marie. She is nine years younger than her step-sister, Kori.

Peyton Marie Federline

Peyton was welcomed as the second child by Kevin and Victoria on April 4, 2014.

The 8-year-old is the sixth child of the Playing with Fire singer and the second child of Prince. She has an age difference of 12 years from Kori.