Girls' Generation alum Jessica (Jung Soo-yeon) shared a sweet sister photo to celebrate her younger sister Jung Soo-jung (Krystal)'s birthday.

In the released photos, Jessica and Krystal captured everyday sisterly moments as they stood side by side in front of a red brick background or held hands walking down the street. Krystal matched a cream-colored knit with navy shorts and loafers to create a neat yet refreshing look, while Jessica completed a natural yet sophisticated style with a check shirt and denim shorts. Both showcased a similar look with white socks and vintage items, proving their sisterly "fashion DNA."

In the following photos, Jessica was also seen taking a mirror selfie while celebrating Krystal's birthday. The number "31" was written on the back of Krystal's leather jacket, symbolizing her 31st birthday. Jessica drew attention with her still superior visuals, and Krystal responded with a cute smile.

Fans reacted with various comments such as "the real-life sister chemistry is the best," "they both are so pretty," "even their fashion sense is alike," and "as Jessica said, donuts are forbidden!"

Meanwhile, Krystal is actively working as an actress. Jessica continues to enjoy global popularity overseas while juggling fashion brand work and music activities.

[Photo] Jessica SNS

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