Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Singer Jessie J during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Mike Hewitt/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Singer Jessie J performs during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Hannah Johnston/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Singer Jessie J performs during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Scott Heavey/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Singer Jessie J performs during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Julian Finney/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Musician Jessie J performs during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Jeff J Mitchell/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Singer Jessie J performs during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Hannah Johnston/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Singer Jessie J performs during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Pascal Le Segretain/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Artist Jessie J performs during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Jeff J Mitchell/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Artist Jessie J performs during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Jeff J Mitchell/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Brian May and Roger Taylor of Queen perform alongside Jessie J during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Mike Hewitt/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Brian May and Roger Taylor of Queen perform alongside Jessie J during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Mike Hewitt/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Brian May and Roger Taylor of Queen perform alongside Jessie J during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Stu Forster/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Brian May of Queen performs alongside Jessie J during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Pascal Le Segretain/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Jessie J performs with Roger Taylor of Queen during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Jeff J Mitchell/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Artist Jessie J performs during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Jeff J Mitchell/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Brian May of Queen performs alongside Jessie J during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Mike Hewitt/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Brian May of Queen performs alongside Jessie J during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Mike Hewitt/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Artist Jessie J performs during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Jeff J Mitchell/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Jessie J performs during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Pascal Le Segretain/Getty Images)

Jessie J perform during the Closing Ceremony of the London 2012 Olympic Games

LONDON, ENGLAND - AUGUST 12: Jessie J performs during the Closing Ceremony on Day 16 of the London 2012 Olympic Games at Olympic Stadium on August 12, 2012 in London, England. (Photo by Julian Finney/Getty Images)