A source told the Daily Mirror newspaper: ''Organisers wanted the best of British - and that's exactly what they've got.
''The models were all keen to take part because it will be such a memorable event.
''British style is known around the world for innovation and creativity, so it's right that it will be celebrated as part of the show - it will look amazing.''
The multimillion pound closing ceremony, which will take place on Sunday August 12, is titled A Symphony of British Music.
Creative Director Kim Gavin said: ''We want to create a fabulous emotional experience, something that people will remember for years to come. It will be an elegant mash-up of British music.''
Kim added it will feature ''the biggest after-show party - the show being the sport''.