A photo of�Super Junior's Siwon and Girls' Generation's Tiffany has caught the attention of fans.

On August 1st, Siwon tweeted the above photo with the caption, "Happy Birthday, Tiffany!"

Fans especially noted how close the two look in the picture. Tiffany can be seen wearing a blue dress with a red bag, showing her sense as a fashionista, while Siwon is looking very dapper in a suit.

Netizens who saw the photo commented, "What relationship do the two have?� They look good together," "Siwon is so good looking," and "For some reason they look unapproachable."

Super Junior will be releasing their remake album 'SPY' through various music sites on August 5th.

Source: Siwon's Twitter