LATEST: Britney Spears has defended her controversial decision to take off through heavy Malibu, California traffic with her baby son on her lap, but accepts she made a mistake.

The pop superstar drew criticism from family groups when she drove away from paparazzi with Sean Preston unrestrained on her lap, but she insists she had to speed off for her 'safety.'

She says, "It is what it is... I made a mistake.

"Being put in the situation that I was in it was kinda bad, with the paparazzi."

Spears reveals she feared a repeat of a traumatic snapper onslaught last week (ends03FEB06).

She adds, "Last week my mom (and I), we went out and they just kind of were really on us bad, so you do instinctively what you need to do."