Jung sisters are 'sibling goals' as Jessica celebrates Krystal's birthday via Weibo

Jung sisters Jessica and Krystal rock 'LAPALETTE' handbags for 'Vogue Korea'

'lapalette' releases making films and additional photos of the Jung sisters, Jessica and Krystal

Jung sisters Jessica and Krystal enjoy their time in New York City

The Jung sisters invite Tiffany and Hyoyeon to their house and meet up with Shindong in preview for 'Jessica & Krystal'

Kang Ji Hwan reveals how he prepares for his kiss scenes + his affection for the Jung sisters

Jung sisters Jessica and Krystal bask in the Los Angeles sun

Jung sisters Jessica and Krystal may star in reality show together

The Jung sisters are a beautiful and fierce duo for 'Harper's Bazaar'

The Jung sisters go on a selca spree

The Jung sisters (Krystal and Jessica) can't deny that they look alike

The Jung sisters (Jessica & Krystal) celebrate National Siblings Day with a childhood photo