(Instagram account of @ssoheean)

An So-hee of disbanded Wonder Girls proved her ongoing popularity with her new Instagram account on Monday.

She posted the first photo on her Instagram, which instantly caught the attention of her fans and received over 4,000 likes in eight hours. Her account has already attracted over 100,000 followers.

(Instagram account of @ssoheean)

In the uploaded photo, An is wearing a big blue backpack, but without a caption, fans are left in the dark about where she is going.

It is unusual for her to open a new social media account. Her last tweet on her twitter account -- her only official social account until Sunday -- is from February 2014.

(Warner Bros.)

The singer-turned-actress stars in the upcoming thriller “A Single Rider,” alongside Lee Byung-hun and Gong Hyo-jin. The film hits theaters on Feb. 22.

By Kim So-yeon (syk19372@heraldcorp.com)