Update: Thanks to Sabrina Dong for the information on the model, Kong Ling Ling. She is Chinese and is signed with Estar Model Management in Shanghai, China.
Model: Kong Ling Ling (Estar)
Ad Campaign: Vivienne Tam, Spring/Summer 2009
Photographer: Unknown
Source: Scanned by Me, from US Vogue March 2009

Ad Campaign: Vivienne Tam, Spring/Summer 2009
Photographer: Unknown
Source: Scanned by Me, from US Vogue March 2009