"The deposition proceeding did go forward today. It was scheduled for 9:45 to 11:45," Kaplan said. "However, it wasn't able to commence until 11:32. "You can imagine in 14 minutes there's not a lot of time to develop questions," he said.

Spears called in sick for a Dec. 12 court-ordered deposition, but was photographed that day driving with a friend. She also didn't show up for another scheduled session.

Spears, 26, and Federline, 29, have been wrangling over custody of their sons, 2-year-old Sean Preston and 1-year-old Jayden James.