Hundreds of uniform-clad schoolgirls danced and sang their way across Liverpool Street station yesterday, led on by a mischievous-looking Sarah Harding.

The Girls Aloud star, joined by co-stars Tamsin Egerton and Talulah Riley, caused quite a stir when she led a flash mob during filming for St Trinian's2: The Legend Of Fritton’s Gold -descending onto the main floor for a dancing extravaganza.
via i30.tinypic.com