Actually, Alice is her middle name. Her full name is Mary Alice Cullen- and you find out quite a bit about this after the fight/during the fight with James in the first book of the saga.
Er... one would assume that Alice Cullen's name is ... Alice Cullen?
Mary Alice Brandon Cullen.
Alice's sister's name is Cynthia Brandon
a pixie cut
Mary Alice Brandon is Alice's real name, the one that she was born as a human with.
Rosalie's middle name is Lillian.
Their names are Carlisle and Esme Cullen
Her name is Mary Alice Brandon, but when she became a vampire and joined Carlisle's family it was Alice Cullen. The actress who plays her in Twilight, New Moon and Eclipse is Ashley Greene
Rosalie's real name is Rosalie. I think you mean Alice. Alice's real name is Mary. Her middle name is Alice and her last name (as a human) is Brandon. Mary Alice Brandon. When she married Jasper, it became Mary Alice Brandon Cullen. But she still goes by Alice. Rosalie Cullen's real name was Rosalie Lillian Cullen (this is on the biography on Twilight Lexicon.com).
vampires: Rosalie bella human: cynthia
Her real name is Ashley Greene
Her full name is Sylvia Alice Earle. So Alice is her middle name.