The family that shops together swears to tell the truth together.

A judge set a Feb. 17, 2009, trial date in the lawsuit brought by Sonja Norwood, mother of R&B star Brandy, against sisters Kim, Kourtney and Khloe Kardashian and their brother Robert Jr.

She has accused the well-to-do sibs of racking up more than $120,000 in unauthorized charges on her credit card in 2006 and 2007, when Kim was working as Brandy’s stylist and dating the singer’s brother Ray J.

The Kardashians have denied, “generally and specifically,” every allegation in Norwood’s suit, saying they had the woman’s permission to shop spree-style. Norwood is seeking complete compensation for the charges, plus 10 percent interest.

A final status conference has also been set for Feb. 11. After that…it’s trial time.