Girls' Generation's Jessica posted a hilarious photo of her sister f(x) member Krystal.

On January 22nd Jessica posted on her Weibo, "I love you. My love" along with a photo of her younger sister Krystal.

The photo was a photo of Krystal taken from a scene in the recently concluded drama SBS "The Heirs." But it wasn't just a screen capture. Jessica edited the photo to include a monkey who was making a similar expression as Krystal in the photo.

Jessica explained that she got Krystal's permission before posting the doctored photo. She wrote, "Even still, I feel bad so I'm going to delete it." Then she deleted the photo after just 5 minutes.

Upon seeing the photo, net users commented, "Jessica, are you dissing your younger sister's looks?" "The sisters have so much fun together," "We'll be looking forward to Krystal's comeback," "I'm sorry to Krystal, but the monkey really looks like her," and "I can just imagine their conversation."