Girls' Generation's members revealed their practice time for their concert.

On Nov. 19, Tiffany posted a picture on her Instagram account of the members wearing black stage outfits while making different poses. They all have slightly different outfits and different-colored hairstyles, adding their own color to each of their styles.

Girls' Generation will be holding their fourth solo concert 'GIRLS' GENERATION 4th TOUR - Phantasia in SEOUL' on Nov. 21 and 22 in Seoul.

According to SM Entertainment, Girls' Generation's concert is planned by the world-famous choreographer Rino Nakasone, who had previously worked with Britney Spears, Avril Lavigne, Chris Brown, and Janet Jackson. As Nakasone had worked with Girls' Generation for their previous songs "Genie" and "I Got a Boy," their collaboration is once again expected to go beyond anyone's imagination.

Girls' Generation is currently doing last-minute preparations of their concert.