The dynamic duo of Jessica and Krystal continued teasing fans ahead of their variety debut!

OnStyle shared a behind-the-scenes video of Krystal being her bubbly self while Jessica looks on in the background, even miming along to her sister's antics. They've promised to release more teasers ahead of their first episode, so stay tuned for more juicy behind-the-scenes videos soon!

Stay tuned for the premiere of Jessica & Krystal's reality show on June 3 at 11 PM KST!