Terri Irwin had a sexy makeover ... and she looks completely unrecognisable!

We're used to seeing Terri Irwin in her iconic khaki uniform with her signature thick blonde fringe, but shock photos from 2002 have been released and Terri looks like a total bombshell in the shots.

Friends told New Idea magazine that Terri stuck with her look for decades because she wanted to be taken seriously as a conservationist.

But judging by these old pics, she decided to try out a whole new, sexy look!

Terri also recently opened up about her plans to have a third child with her late husband Steve, prior to his tragic death in 2006.

"I said to Steve, 'Let's have a third'," Terri told E! News.

"And he said, 'You have a girl and you have a boy. What are you hoping for?'"

"Steve said to me how excited he was when Bindi was born," Terri added. 

"He said, 'Do you think we could have a boy?' And then Robert was born, and they're perfect. They're easy kids; they're wonderful to me; they're such a help."

To see more pics of Terri’s incredible makeover, click here.