Former f(x) member Sulli took to her Instagram account on Tuesday to share a couple of selcas with friend Goo Hara, who is celebrating her birthday on Dec. 13.

According to Korea Herald, Sulli and Goo Hara appeared to have had a sleepover in the photos as the two seemed to be in their sleepwear. The former f(x) idol captioned one of the photos, "Guava's birthday. Thank you for having come to existence."

Reports claimed Guava is Sulli and Goo Hara's endearment. Meanwhile, Sulli, who has been controversial for her Instagram posts, continued to update her social media account with photos from that night's event.

And just like the previous ones, the updates captured the attention of the netizens who once again expressed their disapproval of the photos, Allkpop cited. Many of them were asking if Sulli was okay for posting these photos with such a revealing outfit.

"Does she have mental issues? Why does she keep doing this?" a netizen wrote. Another one commented, "I guess it's concerning because it's weird, but as usual, the netizens are being drama queens over something small. I honestly, really hate them."

On the other hand, there were netizens who were fine with the photos and even commended Sulli for her figure. Some of them came to rescue the idol from accusations of having mental issues.

"The girl looks happy. Don't they know what happiness looks like? There's a huge difference between happy and crazy," a fan said. Another commenter said the idol is just seeking for attention; hence, the weird Instagram photos.

"The girl already knows how close minded people can be so this reaction is expected. Still, she wants the attention and apparently it doesn't matter if it's considered "negative" because people are narrow-minded or extremely conservative," a netizen posted.

What do you think of Sulli's photos? Do you think netizens are just overreacting?