Los Angeles District Attorney's Office said the trial will be postponed for just over a week, to Tuesday 15 October, when the process of selecting jurors will begin.
The Girl, Interrupted star has consistently denied trying to take more than £3,000 of clothes and other goods from the glitzy Saks Fifth Avenue store in Beverly Hills.
Pre-trial hearings have heard a security guard tell of seeing Ms Ryder crouched in a changing room and using scissors to cut security tags off designer handbags.
The guard said Ms Ryder had tried to steal hats, handbags, tops, socks and hair accessories from the store in December 2001.
She could receive more than three years in jail if she is convicted of all the charges against her.
Media attention
Ms Ryder has pleaded not guilty to charges of second degree burglary, grand theft, vandalism and possession of a controlled substance, the painkiller Oxycodone.
The trial has attracted huge media attention in the US, with even Ms Ryder sending herself up by wearing a Free Winona t-shirt on a magazine cover.
Among the delays to affect the trial was one postponement caused by Ms Ryder's arm being injured in a crush of photographers outside court.
Ms Ryder's defence has said it plans to show she paid for the goods and has receipts as proof.
It will also try to show that security staff targeted her because of her star status.
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