She says she’s learned her lesson

Soon-to-be-jailed Nicole Richie has vowed to change her ways.

The Simple Life star, 25, has been sentenced to 4 days in prison for a DUI offence.

And now pregnant Nicole says she’ll slow down as motherhood approaches.

‘I could have killed someone – I think this was a blessing in disguise,’ she tells US OK!

‘This year has been full of lessons learned and soul-searching and realising I’m an adult. It’s time to take responsibility and not take the easy way out.

‘I never want to make a mistake like that again. I never want to possibly take another life in my hands. My life is clearly going to slow down.’

Okay, Nic, we’re watching…