Girls' Generation's Yuri disguised herself as a fan to watch a rehearsal.
On November 23rd, SM Entertainment's Global Twitter account wrote,
Yuri watching the rehearsal w/ the fans in Singapore. Wonder who will make a surprise visit @ the rehearsal in Bangkok twitter.com/SMTOWNGLOBAL/s…
— SMTOWN GLOBAL (@SMTOWNGLOBAL) November 23, 2012
In the photos, Yuri is covering her face with a denim shirt and sunglasses, posing cutely at the camera. The fans around her seem to have no idea that Yuri is right next to them.
Fans tweeted, "She cosplayed a regular person?", "Yuri's so cute~ What's she up to?", and "I can't believe no one knew who she was..".
Source: SM Town Global's Twitter