Lily Allen shows off red locks
Lily Allen and Florence Welch were among the stars attending The Other Ball fundraiser.
Both stars sang at the charity event, at One Mayfair.
Lily, 29, showed off her red hair at the do, which she attended with husband Sam Cooper, Mail Online reported.
Wearing a black split dress with a keyhole chest, the singer auctioned off two tickets for Glastonbury.
Florence Welch from Florence + The Machine and Rudimental also performed at the bash, hosted by producer Mark Ronson.
The annual London event is designed to raise funds to protect at- risk children in India and Africa from adversity and exploitation.
The inaugural Other Ball in New York included performances by The Black Keys and was attended by Leonardo DiCaprio and Danger Mouse.