Hugh Jackman does a Gangnam Style photo-op with Korean pop star PSY. Obviously amused, the "Wolverine" actor gives PSY a shout out on Twitter.

"Gangnam style" is a modern-day popular term in Korea. It refers to high-society living and lifestyle as known in the Gangnam district of Seoul, South Korea. PSY's hilarious dance moves have been popularized by his music video for his song "Gangnam Style." It has been described as the "Macarena" of 2012. In other words, everyone is dancing to the song today.

"Slicing gangnam style!!!! Great to meet @psy_oppa who visited set yesterday," tweets Jackman via his @RealHughJackman account.

PSY re-tweeted the shout-out. Earlier, he also tweeted:

"Had a great time with @RealHughJackman #GangnamStyleWolverine~!!! lol pic.twitter.com/vuOnPhuF"

Both celebrities tweeted photos of their "Gangnam Style" encounter. So, PSY and Jackman are the new BFFs now?

From an Australian actor to a reality show for the Aussies, PSY has been busy covering the Land Down Under.

Mel B lauds PSY in X-Factor Australia, but --

Mel B had sort of lauded PSY in the reality show X Factor Australia Tuesday night. She called PSY a "legend."

But the former Scary Spice of the Spice Girls initially appeared to be reluctant to do a "Gangnam" dance on X-Factor, NineMSN's Celebrity Fix reported.

Apparently, X-Factor viewers had voted for Mel B to dance with PSY on an X-Factor broadcast.

"No! That's not in my contract!" Mel B said, seemingly repulsed by the idea.

"Absolutely not," she told X-Factor host Luke Jacobz on live television.

"It's not in my contract, I will have a meeting with the producers later," she later stressed.

The meeting must have sorted out things pretty well, because Mel B and PSY did get on the X-Factor stage together for a "Gangnam Style" number.

Mel B said her daughter would "kill" her if she doesn't do the "Gangnam" dance. She later tweeted:

"My daughter made me do it but I secretly loved it gangnam style me and him on #xfacforau."

Mel B and PSY dance to "Gangnam Style"

Also read:

'Gangnam Style' Prison Dance Viral Video: 1 Million Views in 3 Days [VIDEO]

Novak Djokovic Dances to 'Gangnam Style,' Says it was a Promise [VIDEO]

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