An unidentified, rather slender girl pulls off a great Cammy costume and look in this particular shot.
First appearing in Super Street Fighter II: The New Challengers back in 1993, Cammy White became an instant bit hit with the fans, though she wasn’t destined to quite appear in all the subsequent titles from that point onwards. Originally a teen agent of the fictional Delta Red task force within Britain’s MI6, Cammy was written in as suffering from memory loss, making her fit in quite nicely as a member of the villainous M. Bison’s group for a start, until the writers needed something else from her in the future.
A slim girl with a scar on her cheek and a penchant for thong leotards, Cammy is a close range fighter who relies on speed and agility to penetrate her enemies’ defenses.
[Update (i.e. I stumbled across another picture of this particular cosplay outing):]
Related Link: http://en.wikipedia.org/wiki/Cammy