Few would imagine the photos shared by idol singer Tiffany on Monday were from the set of ads for wristwatches.

Yet the Instagram photos show the Girls' Generation member reclining in minimal clothing on a white bed and an imitation beach for Casio-affiliated watchmaker Baby-G.

The spring-summer campaign drew early attention from local media, when Baby-G released behind-the-scenes shots of the band in late February, who was subsequently dubbed "sweet and sexy."

Girls' Generation is slated to release Japanese single "Catch Me If You Can" in April.

By Yoon Sarah (sarah356@heraldcorp.com)