Katrina Dawson remembered at memorial service in Sydney

A memorial service is under way for Katrina Dawson, the 38-year-old mother-of-three killed in a siege at Sydney's Lindt Cafe last week.

An image of the order of service booklet for Katrina Watson Dawson at the University of Sydney's Great Hall, Tuesday, December 23, 2014. (AAP)

Family and friends of Katrina Dawson have gathered to remember her life at a memorial service in Sydney.

Ms Dawson's memorial service is being held in The Great Hall at her alma mater, the University of Sydney, where she studied Arts/Law.

The family of the 38-year-old mother-of-three, who was buried privately on Monday, asked attendees to wear a splash of aqua, Ms Dawson's favourite colour, to honour her life.

Organisers have also asked for donations to be made to the Katrina Dawson Foundation instead of flowers.

The charity was set up last week for women's education opportunities.

- With AAP