A seven-year-old girl who wrote to the CSIRO asking for a dragon has had her dream come true.

The CSIRO has created a blue 3D titanium dragon and sent it to Sophie's home in Brisbane.

The letter Sophie sent to the CSIRO. ( Supplied: CSIRO )

Seven-year-old Sophie wrote to the CSIRO after her father told her about the work of the scientists there.

"Would it be possible if you can make me a dragon?" Sophie wrote.

"I would call it Toothless if it was a girl and if it is a boy I would call it Stuart."

The CSIRO posted the letter online, telling Sophie they were "looking into it".

But the letter went viral, appearing on international news sites and prompting a flood of interest, including from financial institutions who wanted to bankroll the dragon.

Even Hollywood animation studio DreamWorks got in on the act.

They said they knew how to train dragons and they wanted to speak with Sophie.

"Our work has never ventured into dragons of the mythical, fire-breathing variety," the CSIRO said.

"And for this, Australia, we are sorry."

The result was the birth of the CSIRO's first dragon at the additive manufacturing facility Lab 22 in Melbourne.

The CSIRO says the scientists there are used to printing anatomically correct insects, biomedical implants and aerospace parts, so they thought a dragon was possible.

"Being that electron beams were used to 3D print her, we are certainly glad she didn’t come out breathing them … instead of fire," the lab's Chad Henry said.

"Titanium is super strong and lightweight, so Toothless will be a very capable flyer."

Sophie’s mother, Melissah Lester, says her daughter is overjoyed.

"All her friends are now saying they want to be a scientist and Sophie says she now wants to work at CSIRO," Melissah told the Canberra Times.

"She's saying Australian scientists can do anything."

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