The mixed-use venue, which will include leisure, retail and conference facilities, will sit on a 'spectacular' coastal site between the capital Kingstown and a proposed new airport.
According to the practice, both the playing surfaces and the bowl will be 'sensitively sculpted into the ground with a series of curving interconnected ramps providing pedestrian and visual flow'.
Describing the project, London-based practice principal Dipesh Patel said: 'We do not see this simply as a new stadium, but an opportunity to facilitate growth and regeneration in the Diamond area of St Vincent, and to create a new national resource for the country.'
The arena is the latest in a series of sports-related projects being designed by the practice in the region. Others include the redevelopment of the Kensington Oval in Barbados, which will become the key venue in the finals of the Cricket World Cup 2007.