South Korea's biggest stars will gather in Hong Kong Wednesday night at one of K-pop's biggest events.

"Gangnam Style" Psy, K-pop boy band Big Bang and South Korean-Chinese heartthrobs EXO are in the line-up for the seventh annual Mnet Asian Music Awards (MAMA) at the AsiaWorld-Expo.

The Koreans will be joined by Britain's Pet Shop Boys, who are set to perform with girl group f(x), as well as other celebrities such as Taiwanese diva Jolin Tsai and Hong Kong movie star Chow Yun-fat, organisers said.

The K-pop genre has made huge inroads into the international music scene in recent years, particularly with the global success of Psy's "Gangnam Style".

The song's music video -- which features the now-famous horse-riding dance -- has racked up more than 2.4 billion YouTube views and became its most-watched video of all time.

Seoul's Gangnam district last month announced that a statue modelled after the song's dance moves is to be erected.

The night's other attractions include hiphop rapper San E, boy band GOT7, and HyunA of girl group 4Minute.

The MAMA awards ceremony was first held in 2009 and has attracted big international names since then.

In 2013 music legend Stevie Wonder performed with South Korean singing star Hyolyn.