Britney Spears was reapplying her make up behind the wheel of her Mercedes just before she caused a three-car pile up, it’s claimed.

The dopey singer was driving on the101 Freeway in California on Saturday night when her car hit a Nissan in front, which in turn ploughed into another vehicle.

The Nissan’s driver tells TMZ that, shortly before the bump, Britney was touching up her make up whilst driving.

The man says he can't be sure whether she was still troweling on the slap at the time of the crash.

He adds that he received an apology from the singer’s bodyguard – but not from Brit herself.

No injuries were reported, however the Nissan driver claims he woke up with a sore back the next day and is consulting a chiropractor.

Could it be more legal woes for Brit?

Click here to see the tearful aftermath of her latest wreck.