Sunny posted a photo on her instagram on August 8 with a caption “the last course of the day i had a date with yoona!!! I’m just getting around to posting it nowㅋㅋㅋㅋ it was really fun>_< he-yoong;he-yoong♥ Date w YOONG!! My sis :3”.

The selca that was taken by Sunny and Yoona was in a restaurant as we can tell from the background. Sunny wearing a red hat and doing a wink with a bright smile and Yoona pouting her lips displaying their cuteness drawn attention to the photo.
Netizens reacted and commented “good to see two people love”, “Sunny, I want to go out with Yoona also”, “SNSD Sunny is so cute and pretty”, and “Girls’ Generation are always pretty. Pretty even without makeups.” And “They look happy”.
Source: reviewstar.hankooki.com