TWICE‘s Chaeyoung and Somi are besties through and through, but their recent Instagram upload is concerning netizens.

TWICE’s Chaeyoung and Somi | @chaeyo.0/Instagram

They shared photos of their recent hangout on April 1st, their tradition for the last 11 years.

| @chaeyo.0/Instagram

Many of the photos show their fun memories, such as hanging out in a photobooth and being out and about.

| @chaeyo.0/Instagram

They also took photos wearing funny, colorful wigs.

| @chaeyo.0/Instagram

However, they’re receiving flack from netizens for one of the photos where they’re lifting up their shirts, with Somi’s bra exposed.

| @chaeyo.0/Instagram

Netizens are concerned that such a photo is not normalized in conservative Korean culture among commoners, let alone celebrities.

“Hmm??” “They uploaded the first picture then edited it lol… Why even take a photo like that…” “Oh my….??” “Wow I don’t even understand why ordinary people do that, but they’re celebrities LOL” “What did I just see” “….Oh my god….what to do” “Why are they like this,,,” “??Is it a joke..?” | Instiz | @chaeyo.0/Instagram

The two exchanged comments under the photo.

Somi: “Hahahahhah no but.. hahahah”

Chaeyoung: “LOL”

| @chaeyo.0/Instagram Netizens are not amused.