A source tells ET that the former couple were friendly exes, until Federline starting asking for more child support.
The 36-year-old singer's success is a major factor in Federline's new request for more money.
The former backup dancer filed court docs in Los Angeles on Tuesday.
Spears' ex-husband celebrated with a porn star, a money cannon and a DJ set.
A source tells ET that Jamie Lynn Spears will request Federline's 2017 tax return to find out where the money is going.
The 36-year-old singer could be heading toward a court battle that involves her young children, Preston and Jayden.
Looks like Britney Spears and ex-husband Kevin Federline are gearing up for a contentious child support battle in court.
Since the pop star's widely successfully Las Vegas residency, a source tells ET Federline would like to see larger payments for their sons.
A source tells ET that the singer’s ex, who has full custody of their two sons, is prepared to go to court if necessary to receive “an amount of child support that would be appropriate given the significant increase in [Spears’] finances.”
Find out what Kevin Federline, Jon Gosselin, Trista Sutter and more reality stars from the first decade of the new millennium are up to!
The 35-year-old singer and mother opened up about co-parenting with her ex Kevin Federline.
The pop star opens about co-parenting with her ex-husband, Kevin Federline.
The 39-year-old father and DJ opened up about his relationship with his pop star ex.
The 39-year-old father has learned that co-parenting with your ex means making sacrifices.
