England have opted to take the away dressing room at Twickenham for Saturday's clash with Ireland in preparation for their World Cup opener against Fiji.
The tournament hosts must wear their red alternate kit and have been designated the visitors' changing room for the September 18 showdown against the Fijians, who also wear white, after losing a coin toss overseen by World Rugby last year.
As a result, head coach Stuart Lancaster has requested that his players use their final World Cup warm-up match against Ireland to familiarise themselves with the away dressing room.
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England will wear their traditional white jersey for the remaining Pool A matches against Wales, Australia and Uruguay, although they will occupy the visitors' changing room against the Wallabies.
They will be aiming to bounce back from recent defeats to France as they set about winning a first World Cup since 2003.
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