Trott strikes gold in the omnium after breath-taking time trial victory over rival Hammer
Great Britain's Laura Trott has won her second gold of the London 2012 Olympic Games with victory in the women's omnium.
The velodrome was the day's hot ticket, with everyone from London 2012 chief Sebastian Coe and Prince Harry to NBA basketball star Kobe Bryant in attendance, anticipating success for Sir Chris Hoy and Victoria Pendleton on their final Olympic appearances.
But first it was Trott's turn.
Golden moment: Laura Trott (centre), Sarah Hammer (left) and Annette Edmondson (right)
Hot to Trott: Great Britain's Laura Trott celebrates winning gold in the women's omnium
Moment of glory: Trott celebrates winning the time trial in the final race of the women's omnium
Group hug: Trott celebrates with her family in the crowd after sealing her incredible triumph
The 20-year-old from Cheshunt won team pursuit gold on Saturday but has now won an individual title to join an elite club of British females to have won double gold at a single Games, including Dame Kelly Holmes and swimmer Rebecca Adlington.
Trott won Track Cycling World Championships gold in each event and now has double Olympic gold too.
Golden girl: Great Britain's Laura Trott (right) in action during the women's omnium 10km scratch race
Close call: Trott (second left) scrapped into third in a tight scratch race in the Velodrome
Nailing it: Trott adjusts her helmet ahead of her showdown with Sarah Hammer
Sarah Hammer of the United States was second, with Annette Edmondson of Australia third.
Trott was two points behind Hammer entering the final discipline, the 500metres time-trial, but claimed her third win from six disciplines to overhaul the deficit and win by a point.
She clocked 35.110 seconds, with Hammer finishing fourth in 35.900 as a jubilant Trott triumphed on 18 points, with Hammer finishing with 19.
On yer bike: Trott rides in the 3km individual pursuit in the first omnium event of the day, and fourth overall
Keep up: Trott made up a deficit of two points in the final race to win the gold medal
Tears of joy: Trott won her second gold of the Games in the omnium on Tuesday evening
The effervescent Trott celebrated with family and team pursuit colleague Dani King before riding a lap of honour draped in the Union Flag as the capacity crowd chanted her name.
Edmondson finished second in the 500m time-trial to secure bronze, with Canada's Tara Whitten fourth.
Trott said on BBC1: 'I can't believe this is happening to me, I really can't.
'I came into today not feeling as good as yesterday, and I was losing my head a bit between events because they weren't going the way I wanted them to. To finish off with that 500m, I can't believe it. I'm really happy.'
She added on BBC1: 'Paul Manning, my coach, got me to peak right on time. I couldn't ask for much more from the coaching staff. They've helped me improve so much since the Worlds.
'It's all thanks to the coaches really, and my family and friends are here too, and the support of the crowd...'
She was full of thanks for her parents, saying: 'I couldn't have done it without them.
'The amount of money they had to put in when I was younger, taking me here, there and everywhere, and my dad gave up his cricket.'
Laura Trott factfile
1992: Born April 24, Harlow.
2010: August - Takes omnium gold, plus silver in points race and individual pursuit, at Junior Track Cycling World Championships in Italy.
October - Represents England at Commonwealth Games in Delhi, India.
November - Claims team pursuit gold in European Championships, Pruszkow, Poland along with Katie Colclough and Wendy Houvenaghel.
October - Represents England at Commonwealth Games in Delhi, India.
November - Claims team pursuit gold in European Championships, Pruszkow, Poland along with Katie Colclough and Wendy Houvenaghel.
2011: February 18 - Fifth as part of British youth squad 100% ME in team pursuit at Track World Cup in Manchester with Katie Colclough and Dani King as Great Britain trio Wendy Houvenaghel, Sarah Storey and Joanna Rowsell take gold.
March 24 - Gold in Track Cycling World Championships team pursuit in Apeldoorn, Holland with Wendy Houvenaghel and King.
July - Wins team pursuit at under-23 European Track Cycling Championships in Portugal with King and Colclough. Also triumphs in scratch race and individual pursuit.
October 23 - Wins team pursuit gold in European Championships in Apeldoorn alongside Rowsell and Trott. Adds omnium title.
December 1 - Wins team pursuit at Track World Cup in Cali, Colombia with Houvenaghel and Storey.
March 24 - Gold in Track Cycling World Championships team pursuit in Apeldoorn, Holland with Wendy Houvenaghel and King.
July - Wins team pursuit at under-23 European Track Cycling Championships in Portugal with King and Colclough. Also triumphs in scratch race and individual pursuit.
October 23 - Wins team pursuit gold in European Championships in Apeldoorn alongside Rowsell and Trott. Adds omnium title.
December 1 - Wins team pursuit at Track World Cup in Cali, Colombia with Houvenaghel and Storey.
2012: February 17 - Gold in team pursuit at London Track World Cup, with Rowsell and Trott, in a world record of three minutes 18.148 seconds.
April 5 - Retains gold medal in Track Cycling World Championships team pursuit in Melbourne, Australia, with Rowsell and Trott, in a world record of 3mins 15.720secs.
June 13 - Named in British team for first Olympics.
August 4 - With team-mates King and Rowsell, claims gold in the London 2012 women's team pursuit in a world record time of three minutes 14.051 seconds.
August 7 - Wins the women's omnium for her second gold of London 2012.
April 5 - Retains gold medal in Track Cycling World Championships team pursuit in Melbourne, Australia, with Rowsell and Trott, in a world record of 3mins 15.720secs.
June 13 - Named in British team for first Olympics.
August 4 - With team-mates King and Rowsell, claims gold in the London 2012 women's team pursuit in a world record time of three minutes 14.051 seconds.
August 7 - Wins the women's omnium for her second gold of London 2012.
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