Jessica and Krystal have long been considered fashion icons and they recently signed on to be the new endorsement models for fashion brand Lapalette.

A representative for Lapalette explained the company's choice with Jessica and Krystal. "The usually stylish, lovable, and honest girls are perfect for the concept of 2014 Lapalette," the rep stated.  The photo ad campaign launches in this month.

"You'll be able to see Jessica and Krystal's advertisement images starting in August both on and offline, and we're planning various promotional activities," added the Lapalette rep.

The K-Pop sisters - Jessica, a member of Girls' Generation, and f(x) member Krystal - currently have their own reality show, 'Jessica & Krystal,' that emphasizes their chic and trendy styles on the OnStyle network in South Korea.

The July 29th episode (Episode 9) features a behind the scenes look at Jessica and Krystal's photo shoot.

'Jessica & Krystal' airs every Tuesday at 11:00 PM (KST).