Mary J. Blige voices Irene, a pampered plastic Barbie doll living in the Doll Museum among many other delicate, priceless toys.
Irene is tall with a thin waist, and wide hips and legs. She has warm brown plastic skin and thick, hair that depends on her outfit. She has wide green eyes, a small attached nose, and thick lips with a painted on mole over her lip.
Not much is known about the past between her and Sherlock, except for the fact that Sherlock ended his supposed engagement to her through a letter over an unspecified reason, resulting in her resentfulness towards the detective.
Unlike Sherlock, she does respect Watson enough to greet him at Gnomeo and Juliet's garden celebration.