Margot Robbie wells up when her brother surprises her in an interview

Sibling mockery is everywhere.
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Margot Robbie gave an interview to MTV Australia on Monday for Peter Rabbit. 
This wasn't your average interview however. MTV had a surprise in store in the form of Robbie's brother Cameron, who acted as interviewer. We surprised @margotrobbie with her brother @cameronrobbiee during an interview for the #PeterRabbit movie in Sydney! 😍&#