Britney Spears may be doing a lot less aimless driving now that her father, Jamie, has been granted permission to sell some of her cars.

Dad was awarded the power to "sell or dispose of" an undisclosed number of her seven cars because they were proving too expensive to run.

According to court documents, lawyers for Jamie Spears claimed that sale of "a certain of" her cars "will save substantial expense to the conservatorship estate."

Earlier this week, it was reported that Jamie has taken to doing a - non-court ordered - knicker check before his daughter leaves the house in a bit to prevent any more intimate photo-ops.

Brit's father and a lawyer will remain in control of her affairs until a July 31 hearing.