VIDEO : Britney Spears Subpoenaed For Deposition in K. Fed Child Support Case

Britney Spears was subpoenaed to sit for a deposition to ?discuss her personal finances.?
This is the latest development in her child support battle with ex Kevin Federline.
On May 22, Federline filed to increase child support payments from the pop icon
The duo share two sons from their three year marriage.
Federline claims that he is ?less in demand than he was in 2008? when the $20,000 a month was determined.
A source told Us that Spears is ?concerned? that K. Fed may try to keep their kids from her is she does not agree.