BLACKPINK's Jennie is gearing up ... on Jan. 22 with a short teaser full of detailed visuals. And while there’s so much to take in — the red hair, the bob, the bloomers, the leg warmers ...

The announcement also included a video teaser in which Jennie wore a short black dress, a pair of sheer net stockings, and sporting bright red hair. Her nails are painted with the words 'RUBY.' ...