She began acting on Australian television, and is best known for her role of Shannon Reed on the Australian soap opera Home and Away and for her role in the 2005 comedy Wedding Crashers.
In 2007, she appeared in The lookout and Hot Rod. In 2008, she starred in Wedding Daze, Definitely, Mabye, and have a voice role in Horton Hears a Who! Fisher has also co-written a treatment for a script entitled Groupies with Amy Poehler, as well as another project entitled The Cookie Queen. She has signed up to star in the movie adaption of the book Confessions of a shopaholic, the filming of which started in January 2008. Fisher resides in LA, California, as well as in London,with her fiancé, English comedian Sacha Baron Cohen(Borrat). On 19 October 2007, gave Fisher birth to her first child, a daughter named Olive.
Isla Lang Fisher was born in 1976 and is an Australien actress and author. She began appearing in commercials on Australian television at the age of nine, before going on to win roles in popular children's television shows Bay City and Paradise Beach.
At the age of 18, with the help of her mother, she wrote two teen novels, Bewitched and Seduced by Fame, that became bestsellers. From 1994-1997 she played the role of Shannon Reed on the hit Australian soap opera Home and Away. Afte a fwe years she toured with Darren Day in the Summer Holiday musical, and appeared in a London theatre production called Cosi.
In 2002 she had a part in the film version of Scooby Doo as Mary-Jane. A larger role in Wedding Crashers, , in 2005 won her the Breakthrough Performance Award at the MTV Movie Awards. In 2006, Fisher starred as Becca, a Manhattan party host in the offbeat relationship drama London.