One source claims the 18-year-old was actually bullied for being there -- apparently not everyone thought she earned the right to walk the shows!
The insider spilled:
We almost forgot that Scarlett Johannson sings, but thanks to this new Moët & Chandon commercial our memory is jogged.
We're thinking the song would probably sound better after a bottle or two of champagne.
Have yourself a listen in the clip (above)!