I think that Vogue is the biggest influencer of them all on a global scale.

Citigroup C.N was the index's biggest influencer with a 4 percent rise after it beat estimates.

And she's so good at it, Australia's biggest influencer understands she looks different in person -and is open about it.

But the biggest influencer of the lot is Facebook - the company that owns Instagram, WhatsApp as well as Facebook itself.

Its $75 "best black tights" have hundreds of five-star reviews online and have been worn by some of Australia's biggest influencers.