Sulli is back with her controversial Instagram posts again.

On January 2, Sulli shared photos from a New Year's Eve party. The idol star in a puffy floral dress is captured laying on the floor, pointing at her armpit, cuddling with her friends and more. 

The unique photos ended up making many headlines, and once again made netizens concerned about her mental health. 

One netizen left a comment on Sulli's Instagram, asking, "Does anyone know why she's like this?" Sulli actually responded, stating, "What about me?"

You can view the party photos by Sulli below.