A funeral service will be held on Thursday for slain Brisbane teenager Larissa Beilby, two weeks after her body was found in a barrel.

Family and friends will gather at noon to remember the 16-year-old, who was allegedly murdered by 34-year-old Zlatko Sikorsky.

Sikorsky is accused of killing the teen and leaving her body in a barrel on the back of a ute he dumped at a Gold Coast property.

He then fled, sparking a huge manhunt, but police caught up with him at a Sunshine Coast unit, where a 28-hour siege unfolded.

He eventually surrendered and was charged with murder, torture, deprivation of liberty and interfering with a corpse. He's also accused of attempting to murder another woman.

Those who loved Larissa held a memorial service for her last weekend, with Deanna Beilby saying the loss of her sister under such horrific circumstances had left an enormous hole in her heart.

Deanne will join their grieving father Peter and brother Nathan at Thursday's service at Bridgeman Downs for a celebration of Larissa's life.

Sikorsky's lawyer Brendan Ryan has told reporters his client intends to defend the charges relating to Larissa's death, suggesting she died as a result of misadventure.