The Sports Illustrated covergirl's agency denies that the now-suspended Twitter handle @IAmBarRefaeli was ever the real Refaeli's account, but whoever was using it Tweeted to-and-fro extensively with other models, and posted apparently authentic behind-the-scenes pictures at jobs. So, you know.
Found this quote at one of the links:
"Though Refaeli clearly meant well — and certainly has a point — describing 15-year-olds as looking 'shaky and hungry' without actually knowing if they’re shaky and hungry isn’t necessarily the best tactic."
Mmmm, yeeeees. Those models-to-be must have been just shaky-nervous and hungry for fame.