The style queen will be the first star name to revamp the trophy in a huge overhaul of the annual music bash which will also see the "outstanding contribution" prize disappear.
Brits bosses have already announced that the show will move to a new home at London concert venue the O2 Arena.
The show will also have a new Oscars-style approach focusing on the best album prize as the prestige award.
It will mirror the Academy Awards' concentration on best film with a longer celebration of each of the nominees and the announcement forming the climax of the show, instead of the honorary "contribution" title.
Dame Vivienne will be first in line to restyle the trophy in a move which will see leading figures add their touch to create a bespoke look each year.
Brits chairman David Joseph said: "Vivienne stands for all the things we want to inspire in tomorrow's generation of artists.
"She continues to be unique, innovative and not to mention massively inspired by music and vice versa. We are honoured she accepted our offer of designing 2011's trophy."
Shortlists for the event – which takes place on February 15 – will be announced on January 13.