Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Will Mellor

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Clare Balding

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Clare Balding (left) and Alice Arnold

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Edward Grimes and John Grimes of Jedward

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Gemma Collins, Edward Grimes and John Grimes of Je...

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Edward Grimes and John Grimes of Jedward

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Gemma Collins

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Gemma Collins

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Gemma Collins

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Dame Kelly Holmes

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Dame Kelly Holmes

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Dame Kelly Holmes

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Sian Welby

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Sian Welby

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Ashley Roberts

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Ashley Roberts

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Ashley Roberts

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Ashley Roberts

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Ashley Roberts

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Tom Grennan

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Alex Scott (left) and Jess Glyne

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Ellie Simmonds

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Alex Scott (left) and Jess Glyne

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Alex Scott (left) and Jess Glyne

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Kate Garraway

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Kate Garraway

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: AJ Odudu

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Jordan North

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: AJ Odudu

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: AJ Odudu

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Alex Scott and Jess Glyne

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Alex Scott and Jess Glyne

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Alex Scott and Jess Glyne

Guests arrive for the ITV music special 'Katy Perry: Night of a Lifetime' a...

• People: Lenny Rush