Cheryl Cole is putting her solo career on hold.

The 29-year-old singer announced in September her next single would be 'Screw You' but the track has been postponed indefinitely so she can focus on the 10th anniversary reunion of her band Girls Aloud.

The move is believed to have been made after the group's comeback track, 'Something New', missed out on the number one spot, while Cheryl's last single, 'Under the Sun', only reached number 13.

A source told the Daily Mirror newspaper: ''Cheryl originally planned for her solo material to coincide with the Girls Aloud promo schedule.

''That way, it was thought they would cross-advertise each other.

''Unfortunately, it just felt a bit confusing to have both going on at once.

''After the girls' single lost out to Olly Murs in the race for number one and Cheryl's single failed to reach the top 10, it was decided to focus all the attention on Girls Aloud for the time being.

''They might reschedule it for some time in March, after the girls' tour, but there is no date set at the moment.''

Meanwhile, Cheryl's bandmate Nicola Roberts - who was a judge on fashion TV contest 'Styled to Rock' - has had a hand in styling the group for their comeback.

The source said: ''Nicola has been very hands-on with the girls' styling.

''She even took part in a fashion TV show with Henry Holland and Rihanna this year, so she knows her stuff.''