Adelaide brother and sister Annette and Alexander Edmondson are among 12 Olympic debutants in the Australian track cycling team for the London Games.
The Edmondsons are the first brother-sister combination to represent Australia in cycling at the Olympic Games.
At 18, Alexander is the youngest member of the team and will be part of the men's endurance team led by Jack Bobridge.
The teenager won two gold medals at last year's world junior championships in Russia and is a member of the Australian pursuit team that won the gold medal at the London test event in February.
"I'm absolutely over the moon, it's pretty overwhelming,'' Alexander said.
Annette, 20, is part of the women's team pursuit which won the silver medal at the world championships in Melbourne earlier this year. The team held the world record for 10 minutes before it was reclaimed by Great Britain.
The Edmondson family were celebrating the rewards of years of hard work when the team was named in Adelaide on Friday.
"Mum and dad couldn't be happier and it's just so good to be able to give back to them after they have dedicated so much for us," Alexander said.
"They gave up their time and money. It's a small payback but it's crazy. Just to be able to it by yourself would be amazing but to have my sister there next to me is going to be crazy. Words don't describe it."
Anna Meares, 28, will be the senior member of the team. She is chasing her fourth Olympic medal and if successful will be the first female cyclist from any country to win four Olympic medals and the first to medal at three different Games.
She was Australia's first female rider to win an Olympic track gold when she took out the 500m time trial in Athens in 2004.
Meares said she is glad to be heading to London without any hiccups after suffering a horrific crash before she even got to Beijing, where she won an Olympic silver medal in 2008.
"It's been nice not have any hurdles or hindrances thrown at me this time given the accident I had preluding the Beijing Games,'' Meares said.
"I remember my first Games in 2004 when I pulled on the green and gold skin suit for the first time. I seriously felt like I was wearing Superman's cape and I wasn't quite sure whether it belonged on my shoulders.
"I have been in this team long enough now to really feel that position is my home and I love to represent my country."
Meares stressed that this is the first time the women have had the same amount of Olympic track cycling events as the men to compete in.
Olympic debutant Kaarle McCulloch of Sydney dedicated her selection to her coach Jim Beer, who died of cancer last month.
The former middle distance runner, who will ride in the team sprint with Meares, took up cycling eight years ago after being encouraged by her stepfather.
On that first day of cycling McCulloch began to dream of the Olympics after what Beer had said to her.
"He said if I had have ridden 100m more on that track I would have been an Olympic champion like Anna Meares,'' an emotional McCulloch recalled.
"And today here I am going to my first Olympic Games and I'm going to be riding with the great Anna Meares. I am so humbled and very excited."
Team in full:
Endurance (team pursuit and omnium) - Men: Jack Bobridge, Rohan Dennis, Alexander Edmondson, Michael Hepburn, Glenn O'Shea. Women: Amy Cure, Annette Edmondson, Melissa Hoskins, Josephine Tomic.
Sprint (team sprint, sprint and keirin) - Men: Matthew Glaetzer, Shane Perkins, Scott Sunderland. Women: Kaarle McCulloch, Anna Meares.