Apparently the singer was trying to make her model girlfriend jealous.

At a London fashion week party, this celebrity offspring of a celebrity going through a divorce was sharing lines of coke with a female singer who would not stop flirting.

Apparently the singer was trying to make her model girlfriend jealous.

Offspring: Daisy Lowe
Female singer: St. Vincent
Model girlfriend: Cara Delevingne

Source: http://www.crazydaysandnights.net