A woman will plead guilty to drink driving when she had nine children unrestrained in the car, a court heard today.

One other child was wearing a seatbelt.

Prosecutor Hew Roberts told Melbourne Magistrates Court the woman, Tanya Chilly, would admit to being over the limit and unlicensed when she crashed her car, injuring three of the children.

Chilly will plead guilty to three counts of dangerous driving causing serious injury, nine counts of failing to ensure a child was restrained in the car, one count of driving unlicensed and one count of drink driving.

She faces a maximum five years' jail.