Girls Aloud have vowed to ban all booze while on tour to support bandmate Sarah Harding following her past struggles with alcohol addiction.

The five-piece - Harding, Cheryl Cole, Nadine Coyle, Kimberley Walsh and Nicola Roberts - ended their long hiatus in October (12) by announcing plans for a new single, album and 10th anniversary tour, which commences in Newcastle, England later this month (21Feb13).

Harding was treated for depression and alcohol abuse after splitting from her fiance Tom Crane in 2011 and is still battling her demons, so the group has reportedly opted for a completely dry tour to ensure she doesn't stumble.

A source tells British newspaper The Sun, "The girls have decided to ban alcohol altogether in support of Sarah. She's still dealing with her alcohol problem two years on - and they've decided to ban it out of respect for her. It's only fair, they don't want her falling off the wagon and going back to how she was after she split from Tom."

The rule will even apply to all staff and backing dancers on the tour, who will have to leave the arena if they want to consume any alcohol.