Beijing Olympian Tom Daley is heading up a 40-strong Team GB for the first ever Youth Olympics in Singapore this summer.
In total, 3,600 of the world's top boys and girls aged 14 to 18 will take part, competing in 26 different sports which make up the proper Olympics.
Also named on the team are athlete Victoria Ohuruogu and Wimbledon junior boys semi-finalist Oliver Golding.
Tom Daley was Britain's youngest competitor in the Beijing Olympics.
Another member of the team is Londoner David Bolarinwa who won gold and silver in the 100m and 200m at the European Youth Olympic trials in Moscow.
Oliver Golding is the British under-18 number one at tennis and he'll be trying to beat his brilliant performance at Wimbledon.
Oliver Golding will be playing tennis for Team GB
And it's not just your average sports like tennis and diving.
Northern Ireland archery star Mark Nesbitt will be at the Youth Olympics, and he got double gold for Team GB at the 2009 Australian Olympic Festival AND silver at both the World and European Junior Championships in 2009.