The Court of Appeal for Ontario has denied the appeal of the woman convicted in the horrific South London Costco crash.

The London woman found guilty in the July 2014 Costco crash that killed a 6-year-old and her newborn sister and seriously injured their mother and 3-year-old sister has lost an appeal.

Woman's car abruptly reversed into the store's front doors, hitting a pregnant mother and her two young children last July.