Hundreds paid their respects to North Taieri brother and sister Shannon and Danielle Kiriau today.
The crowd of more than 500 spilled out of the Campbell and Sons Chapel, in Mosgiel, and into the street.
Numbers were so large that police were required to divert traffic following the funeral.
Shannon (22) and Danielle (17) died after the car they were passengers in crashed on the Southern Motorway early on Sunday.