What: A ribbon cutting launched the opening of the cosmetic brand's new Mong Kok concept store.

Who: Seen in the crowd were Estee Lauder's Asia-Pacific president, Fabrice Weber, marketing director Natsuko Watanabe, Vivien Lau, models Ana Rivera and Cara Grogan, actresses Rosanne Wong Yuen-kwun, Kama Lo, Rabeea Yeung and singer Kay Tse On-kay.