The 24-year-old is mum to Ruby, three, and Dexter, two, and said she wants to give up when her kids are little enough not to remember her smoking.
According to UK newspaper Daily Express, she said: 'Yes, I'm trying to give up smoking again. Although I have enjoyed the different tones it's given my voice, it's now more gravelly and low and more suited to the sort of music I've been doing.
'But I know if I keep smoking it will start to affect my voice in a bad way.
'Besides, I don't want my children to remember me smoking, so I'd like to give up before they're old enough to remember their mother puffing away like a train.'