The girl group, who are on course to top the UK charts with their debut single 'Cannonball', attended the Glamour magazine event, held in honour of Contostavlos's recent cover issue.
© Rex Features / Richard Young
Bunton had previously given the group her backing, tweeting: "So excited for Little Mix - get ready for the ride, girls!!"
The foursome - Jade Thirlwall, Perrie Edwards, Leigh-Anne Pinnock and Jesy Nelson - posed alongside the singer-turned-TV judge, who later told her Twitter followers: "So lovely to see Little Mix, its all just starting for them! Such sweethearts!!!!"
© Rex Features / Richard Young
Writing on their official Twitter page this morning, Little Mix said: "Went for dinner last nite with tulisa n glamour magazine was amazing! Also met Emma bunton wat an inspiration!"
The Kensington Roof Gardens bash came the night after the X Factor series wrap party, at which axed finalist Frankie Cocozza was involved in a scuffle with paparazzi.
> Simon Cowell wants 'X Factor' Little Mix to be new Spice Girls
Watch Digital Spy's chat with Little Mix below:
