Rio 2016 - 100 days to go: Great Britain to reveal Olympic and Paralympic kits

Olympic and Paralympic athletes model the Stella McCartney-designed kit for London 2012

Great Britain will reveal their kit for the 2016 Olympics and Paralympics on Wednesday as Rio de Janeiro marks 100 days to go until the Games.

As in 2012, leading designer Stella McCartney, in collaboration with Adidas, has been selected to create the outfits to be worn by Britain's squad.

On being announced as creative director last year, McCartney promised her designs would deliver "cutting-edge" innovations, "allowing GB athletes to perform to their very best ability on the world's biggest sporting stage".

UK Sport has predicted Britain could win as many as 79 medals in Rio, where the Games begin on 5 August.

Mo Farah will be attempting to win another Olympic double after taking 10,000m and 5,000m gold in London, while Jessica Ennis-Hill will defend her heptathlon crown.

Performance analysts Gracenote have predicted both to win medals again in Rio - and say while Team GB will fall "somewhat short" of UK Sport's target, "it is looking like having its best ever Olympic Games when not hosting", with 65 medals.

The 2016 Games have been beset by organisational problems, with Brazil in a deep recession that is affecting all aspects of the Olympics.

Organisers recently had to scrap plans for a 4,000-seater stand at the rowing and canoeing venue as part of a $500m (£353m) cost-cutting measure.

The tough economic situation may also be the reason for slow ticket sales to date.

Figures published by BBC Business last month showed just 12-15% of Paralympic tickets and 47% of Olympic tickets had been sold.

Concerns over the Zika virus also remain, with venues to be inspected daily in the lead-up to and during the Games in an attempt to minimise the impact of the virus.

Past British Olympic kits

Sir Chris Hoy, posing in the 2012 Team GB tracksuit, won two golds in London, taking his tally to six to become the most successful British Olympian of all time

Modern pentathlete Heather Fell, diver Tom Daley and cyclist Victoria Pendleton model GB's 2008 kits for Beijing

Bright tracksuits were much in evidence at Atlanta 1996

Daley Thompson won his second successive Olympic decathlon gold medal at the 1984 Los Angeles Games