Nicola Roberts has been spotted out and about in London after revealing she is working with Little Mix again for their upcoming second album.
She tweeted last week: "Having so much fun writing for Little Mix this week.. All I've done is laugh (and write) but mostly laugh!"
The former Girls Aloud star first co-wrote a song with the 'X Factor' winners for their first album 'DNA'. The single, called 'Going Nowhere', reached No.2 in the US iTunes charts.
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