Girls' Generation and f(x)'s member Amber revealed their close relationship.

"Our cutie Amber who came to support us~ Even brought us delicious drinks! Thank you so so much~," posted member Seohyun on her Instagram on Sunday along with a picture.

In the picture, Girls' Generation members are posing for the camera with Amber in the waiting room of a music program. Amber had visited Girls' Generation for their comeback stage with drinks, showing their affection for one another.

Girls' Generation recently released their new song "PARTY."