Robbie Ditches Red Balloons

British pop loverboy Robbie Williams has pulled out of performing with the German singer who had a worldwide hit with 99 RED BALLOONS.

ROCK DJ hunk Robbie had invited Teutonic beauty Nena onstage with him during the current German leg of his ESCAPOLOGY tour, suggesting they sing a duet of her massive 1984 chart-smasher.

But sadly, Nena was let down when Williams' management informed her via email that the plan was off.

She says, "He is very sorry but it is out of his control."