By Jen Heger - Breaking Celebrity News Assistant Managing Editor

Britney Spears is gearing up for war as she faces off in court next week against her former manager, Sam Lufti, and Breaking Celebrity News has exclusive details on the Toxic singer’s battle plan.

Spears' fiance Jason Trawick, her parents, Jamie and Lynne Spears, talent agent Kevin Huvane and current manager, Larry Rudolph are all expected to take the stand against Lufti, who is suing the Spears family.

EXCLUSIVE DOCUMENTS: Britney's Witness List

As we previously reported Lutfi is suing the ‘X Factor’ judge and her parents for defamation and breach of contract. Lufti took particular umbrage to Lynne Spears' portrayal of him in her book, Through The Storm, that discussed Lutfi's role in Britney's life leading up to her very public meltdown, which resulted in Jamie gaining conservatorship of his daughter in 2008.