The 'Smile' singer, who attempted to punch a passer-by after leaving a
London nightspot in the early hours of Tuesday morning, admits
she isn't a "good person" when she is under the influence of illegal
substances but still can't bring herself to quit.

She told Paper magazine: "I'm not going to say I'm never going to do drugs
again. I just know I'm not a good person on drugs."

However, the 23-year-old star insists she did stop using recreational drugs
after she discovered she was expecting a baby with then-boyfriend Ed Simons
last November.

Lily, who suffered a miscarriage in January, says she vowed to clean up her
life for the sake of her unborn child.

She said: "It was the hardest thing for me. When I realized I was pregnant
and realized I wanted to have the baby, I made a huge decision - to make my
life more stable."