Girls' Generation's Jessica and f(x)'s Krystal impressed with a photo that has fans saying the two sisters have amazing genes.

On the 13th, a picture of the two idols was revealed under the title "The Supreme Jung Sisters". Their resemblance to each other is definitely noticeable in the photo.

Jessica accented her slim figure in a flower print dress, while Krystal showed off her innocent charm in a simple white outfit. The picture was taken last month when the sisters were at an event as honorary ambassadors for the '2012 London Paralympic�Games'.

Fans commented, "They are the best siblings in the industry," "I still vote for Krystal," and "They seem to not look alike, but they still look alike."

In related news, Jessica and Krystal recently collaborated together for "Butterfly" from�the OST of SBS' 'To the Beautiful You'.

Source + Image: Ilgan Sports via Naver