Who is the singer in this video ?

[9DK4D7-D8Rg]http://www.youtube.com/watch?v=9DK4D7-D8Rg[/video]
http://www.youtube.com/watch?v=9DK4D7-D8Rg

First, I do not know who she is. Londoners, you are needed...
If you authored the video, you already know she is performing near the entrance to the Ripley's Believe it or not Museum. Ripley's does use performers to get people's attention in traditional carnival fashion. Also that dress is not classic street performer style. Music-hall and Musical artists are top live multitalented performers, she could be one working for Ripley's.Worth a try ?

Then again, she could be a talented 'soccer mom' (i'm Canadian ) making an old dream come true, one night only @Piccadilly Circus