Cara Delevingne was rocking a whole new look as she arrived with Emily Ratajkowski to the Vogue World Show afterparty at The George in Mayfair following her 'bizarre' performance on stage. Cara Delevingne was rocking a whole new look as she arrived with Emily Ratajkowski after her 'bizarre' performance in the Vogue World Show Quirky: The model, 31, caused a …