Wicked stars Lucy Durack and Jemma Rix talks about Wicked’s tour of the real Oz, opening in Sydney after a stint in Melbourne.

Wicked star Lucy Durack has her own theory about why audiences keep coming back to see the hit show.

The bubbly Aussie plays Glinda the Good Witch alongside Jemma Rix as the green-skinned “Wicked” witch of the west, Elphaba, and says night after night she’s continually blown away by her onstage bestie.

“Jemma is amazing,” Durack tells AAP ahead of opening night in Sydney.

“Literally, I have the greatest seat in the house because I’m standing on stage watching her do Defying Gravity and it’s ridiculous … just when you think she couldn’t get any better, she does …

“I think that’s why the audiences keep coming back to see Jem get better.

“It’s freakish. It’s like a freak show. It’s like a really good freak show. A high-class freak show.”

And one that Australians love.

Wicked ran for more than three years in Australia from 2008, thrilling audiences in Melbourne, Sydney, Brisbane, Adelaide and Perth.

Now it’s back – after premiering in Melbourne earlier this year, it’s opening in Sydney in September and then heads to Brisbane in February 2015.

In case you’ve been living under a rock and haven’t heard, the musical looks at what happened before Dorothy dropped into Oz, tracking the untold story of the witches Glinda and Elphaba.

Durack (who starred in Legally Blonde the Musical) was the first to play Glinda in the Australian premiere in 2008, while Rix also has a long history with the musical, playing the beloved part of Elphaba in Australia and Asia.

But she’s still not quite used to the make-up.

It takes about 40 minutes in make-up for Rix to become the green-skinned witch, but taking it off is another matter.

“It’s all over my ears and in my hair, so I can never get it all off. I have a shower after the show obviously and I’m always still a little bit green,” she says.

But for Rix, who belts out big numbers such as Defying Gravity, it’s a fun, but tough role.

“Definitely when I’m off stage I’m resting and sleeping and trying not to talk too much,” she says.

For both stars, it’s been a joy to bring the show back to Australia – the real Oz.

“There’s something about Wicked, people just love it,” Rix says, adding there’s a tremendous amount of excitement for the show on Instagram and Twitter.

And Durack says it’s the kind of show that people see again and again and again.

“There’s so much to see, there’s so much to take in,” she says.

“The story’s so rich, the sets are so impressive and there’s so many people onstage in amazing Tony-award winning costumes.

“Once is enough to get one glance at it, but it’s nice to come back a few times and see all those things that you missed.”