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:
This is so major!
The Vogue Italia cover girl stopped by Good Morning America on Wednesday to make the announcement and we couldn't be more proud of her!
Fingers crossed other companies will follow Ralph's lead!
Check out Robyn's interview (above) and pics from the campaign (below)!