Allegra Coleman

Allegra Coleman was a fictional celebrity invented by writer Martha Sherrill for the purposes of a hoax magazine article. Then model (later actress) Ali Larter portrayed the imaginary actress in Sherrill's feature, which appeared in "Esquire" (November 1996).
History.
In a parody of celebrity profiles, the article described Coleman's role in an upcoming movie with Woody Allen, her tempestuous relationship with David Schwimmer (including a scandal involving nude photographs taken by paparazzi), and her friendship with Deepak Chopra. She is said to be 22 years old, the daughter of "pop-art photographer Max A.F. Coleman" (who left the marriage and family in 1981) and actress "Kay Garland, who played the spoiled daughter in "Mildred Pierce"". In real life, that specific role in "Mildred Pierce" had been played by Ann Blyth, whose life in no way resembled the fictional Kay Garland's. (Garland is said to have abandoned her family in 1985, leaving Allegra, then 11, to raise her siblings with assistance from an aunt, a grandmother, and friends.) Coleman was married briefly at 17 to "Mike Mumy", the (fictional) brother of actor Billy Mumy.
Within the context of the article, Coleman is already a successful actress, having appeared in the TV series "Melrose Place", and the films "Down Periscope", "Guarding Tess" and "Cliffhanger", amongst others. Also within the context of the article, her life has been the subject of tabloid reportage and speculation for some time. By the end of the article, in a surrealistic turn, serious ambiguities are raised about Allegra's actual existence, as she seems to have disappeared after a car crash and it is noted that "We would always have her, and the idea of her — this glorious, young, alive vision — which is all we want in the end, it turns out. Actual existence was a minor issue." 
The many deliberate (and easily spotted) inaccuracies were meant to be indicative that the article was a satire of a typically breathless style of celebrity profile articles, and indeed "Salon" magazine identified the article as a hoax immediately upon publication. The hoax was formally revealed by "Esquire" editor Edward Kosner in a press release to the news wire services.
The article was photographed by photographer Troy House, who knew Ali Larter from previous jobs and approached her about doing the parody.
Sherrill later wrote a satirical novel on Hollywood life that was essentially both an expansion and continuation of the original "Dream Girl" article, and featured Allegra Coleman as a prominent character. The novel, "My Last Movie Star," was published by Random House in 2003.
Reaction.
Some response to the affair focused on its ethics; Schwimmer's friends were reported to have complained about the invasion of privacy involved in using the actor's fame. Writing in "Salon", David Futrelle commented that the article seemed to hearken back to "Esquire's" mid-1960s heyday.
The article written about Coleman as the new "It Girl" prompted calls from studios and talent scouts eager to offer Coleman scripts. The incident jump-started Ali Larter's acting career, and she went on to appear in TV shows (including the Niki Sanders role in NBC's "Heroes") and movies (including "Varsity Blues," "Legally Blonde", and "Final Destination").