f(x)'s Krystal recently�shared a couple photo collage with Amber.

On February 21st, Krystal posted on�me2day, "Aegyo to each other...ha...", with the collage attached.

In the photos, Amber and Krystal are making the same cute faces and poses in the opposing photos.

Netizens commented, "Wow! It's Amber!", "Krystal unni is so pretty!", "You two are both so cute hehe", and gave explosive feedback.

In related news, Krystal is receiving love from viewers as part of the cast on MBC's "High Kick 3".

Source: Krystal's me2day