Actor Joo Sang Wook has reportedly mastered the choreography for SISTAR's "Alone".

Joo Sang Wook guested on June 9th's 'Invincible Youth 2' and made mugwort rice cakes with the G6 members. He teamed up with SISTAR's Bora, Jewelry's Yewon, and Boom to make one of the ingredients, soybean flour.

While they were waiting for the beans to roast, Bora performed a "wave dance" for the actor and commented after, "I showed you a wave so oppa should show one too." Joo Sang Wook is reported to have gotten up immediately to do his own wave dance, only to make the others laugh because of his stiff moves.

The SISTAR member then asked, "Do you know our song 'Alone'?" to which he replied, "Not even joking. I've watched it over 600 times." Bora ended up teaching him the "Alone" dance, and along with Boom and Yewon, they pulled off the dance as a group. Joo Sang Wook apparently followed along pretty well.

In related news, Joo Sang Wook chose T-ara's Hyomin as his ideal girl from the variety series.

Source + Photo: Mail Kyunje via Nate