Netizens are arguing that f(x)'s Krystal has a stronger resemblance to Girls' Generation member YoonA than her own sister, Jessica.

The above photos surfaced on an online community site with the title, 'Is it true that Krystal and YoonA are sisters?'

The screen capture of Krystal is from her MBC sitcom 'High Kick', while YoonA screen capture is from her recent bed advertisement.

Both girls have the same wavy hair in similar shades, and both are wearing similar facial expressions. Comparing the two, Krystal looked more like YoonA than her sister Jessica.

Fans who saw the photo remarked, "YoonA really does look like Krystal," as well as "Why does she look like YoonA and not Jessica?", and "Regardless, they are both so beautiful."

Do you think Krystal looks more like YoonA or Jessica?

Source & Image: TVDaily via Nate