Britney has strict visiting regulations over when she can see her sons and is often accompanied by a court appointed parenting monitor, pictured here in October.[Agencies]

Britney has appeared to be struggling with parenthood - she currently has three weekly visits with her sons, including one overnight stay, all supervised by a court-appointed parenting monitor.

Spending Christmas with her boys has been a minor victory for Britney, who has struggled to prove to the court that she is a responsible mother after regularly failing to turn up for mandatory drug tests.

Happier times: Britney and Kevin Federline before their acrimonious split and subsequent custody battle which left Britney having her boys for just two days over Christmas.[Agencies]