An allegedly unlicensed driver faces manslaughter charges after the deaths of a heavily pregnant woman and her teenage sister-in-law in Sydney.
Katherine Hoang, 23, pregnant with twins, and Anh Belinda Hoang, 17, were killed when their Nissan Tiida collided with Mazda 3 travelling in the opposite direction in Orchard Hills on Friday night, police say.
The unborn twins also didn't survive the crash on the dual carriageway.
Katherine's husband, Bronko, who was supervising his younger sister's driving from the front passenger seat, was taken to hospital in a critical condition.
The Mazda 3 driver was on Sunday charged with 10 offences including two counts of manslaughter, aggravated dangerous driving and unlicensed.
Katherine and Bronko married recently after meeting and falling in love years ago at the Western Sydney University Taekwondo club.
Vice-president Hansel Rebello said Bronko, who'd recently started a new job in the disability sector, had an "infectiously vibrant outlook to life".
"Katherine was a beautiful gentle soul who always had a smile on her face," Mr Rebello posted online.
"Belinda shared Bronko's energetic attitude and had so much to look forward to in life.
"Pull through Bronko, you have a lot of mates waiting for you."
One of Katherine's uni friends said people were "devastated and paralysed" by her death.
"Katherine, who liked being called Kate, was a smart, brilliant, funny, kind, loving friend who never had a bad word to say about anyone," Tom Cross told AAP.
"Hearing of her passing along with two unborn twins is a senseless loss beyond words."
Rishad Akbary said words couldn't describe the pain he was in.
"All my condolences to Katherine and Bronko's family, I can't even imagine what they are going through," he posted online.
Two other vehicles in the incident had to take evasive action to avoid also crashing, police say.
An 18-year-old man behind the wheel of a ute suffered minor facial injuries while the other driver was uninjured.
