London is the name given to the dress Alice Liddell wears outside of Wonderland in the real world in Alice: Madness Returns. It is only seen during the real world events of Madness Returns. Although it's noticably of some kind of a Wonderland influence, the costume makes Alice look insignificant in her reality, and the use of dull colors is to somehow draw attention away from her.
While in this dress, the player sees Alice how she looks in reality, while in Wonderland she appears how she sees herself, or how she wants to look, hence why she looks so different. As Alice is suffering from poverty, her clothes were given to her by Pris Witless.
Alice's dress appears worn and dirty, possibly because it is the only outfit she owns, and she is unable to have them washed properly. She wears a striped, black-and-white, long-sleeved shirt, and a black skirt. She wears a tattered white pinafore over the top of them, which bears a checkered border. Her stockings are black and her shoes are also black, which have nickel buckles.
In this dress, Alice looks just as tatty and dirty as the outfit; her skin is sickly pale, her cheeks are more gaunt, her hair is short and messy (as it has not been washed or brushed recently, which could also make it appear darker), and her pale eyes make her look tired or that she has been crying.