ROSÉ and Bruno Mars flirt up a storm in the new music video for their collaboration.

The BLACKPINK star and the 'When I Was Your Man' hitmaker have joined forces on the fun tune 'APT.' - which is named after a drinking game the 27-year-old South Korean star taught her "crew" and Bruno, 39, in the studio.

The K-pop idol is seen planting a kiss on Bruno's cheek in the playful promo.

Sharing the genesis of the song, ROSÉ explained: "'APT.' is actually my favourite Korean drinking game that I play with my friends back home. It’s so simple, puts a smile on your face, and breaks the ice at any party.

“One night in the studio I taught my crew how to play the game. Everyone was fascinated, especially when I started the chant, so we played around with it and I said we should make a song out of it... and after Bruno joined the track, the rest became history!"

In an interview with Vogue, ROSÉ actually revealed she wanted her team to delete the track from their phones because she didn't think a song about a drinking game was a good idea, but after they got hooked on it, she had a change of heart.

She said: “I remember going home [from the studio] kind of freaked out. Is this OK, that I’ve written a song about a drinking game?”

The track is the lead single from ROSÉ's eagerly awaited debut solo album, 'rosie', which lands on December 6.

A press release notes: "The 12-track collection marks ROSÉ’s most personal and candid release to date with her co-writing the project in its entirety, including ‘APT.’"