Having seen promo photos and their CF, the Biotherm girls, SNSD's Yuri, Sooyoung and Tiffany turned up this afternoon on May 1st for a Biotherm event to sign autographs and pose for pictures with fans who bought the products. The event was held at Lotte Department Store in Seoul as the girls wore light pastel colored outfits to complement the new Aquasource 1.2.3 moisturizing products. [gallery]