A newlywed couple still wearing their tuxedo and wedding dress have been killed in a crash just minutes after they got married.

Police in Orange, Texas, said Harley Morgan, 19, and Rhiannon Boudreaux, 20, died after their car collided with a truck as they tried to leave the driveway of the courthouse where they had tied the knot.

They were pronounced dead at the scene by the same judge who married them.

“I’m talking five minutes. You may kiss the bride,” said Orange Police Captain Keith Longlois.

“The family was right behind them. They were all going out to go to wherever they were going to have their reception,” he said.

Mr Longlois said they were “childhood sweethearts” who decided to be married by a popular Justice of the Peace Joy Dubose-Simonton.

He said the groom was driving when he tried to exit the driveway onto a five-lane highway.

A truck pulling a trailer carrying a heavy tractor slammed into their vehicle. The force was so great that witnesses said the car flipped multiple times before coming to rest in a ditch.

The driver of the truck was not identified but Mr Longlois said he was cooperating with the investigation and there was no sign of wrongdoing. Drug and alcohol tests would be conducted, he said.

“I had to sit there and watch my two babies die,” the mother of the groom, LaShawna Morgan, told the Beaumont Enterprise.