Krystal is officially 27 years old!

On October 24 KST, singer and fashion entrepreneur Jessica, her older sister, took to personal Instagram account to share a couple photos of the two, along with a short but sweet caption reading, "Cheers to my little birthday girl 🥂✨." In the photos, the two are seated beside one another at a restaurant, looking at each other happily as they pose with glasses of white wine.

Meanwhile, followers of Jessica's Instagram account left a number of comments celebrating Krystal's special day and admiring the two sisters' strong visuals, leaving comments like, "Sister goals," "Happy birthday to Krystal," and "The Korean version of Gigi Hadid and Bella Hadid."

Check out Jessica's post below!