Prince William is supported by his cousins Lady Kitty Spencer, Lady Amelia Spencer and Lady Eliza Spencer in a rare joint outing

They were seated in the audience alongside Princess Beatrice, and her husband Edoardo Mapelli Mozzi, who also appeared to be cheering on Prince William for the evening.

Countless column inches have been dedicated to Diana’s family in recent months.The Spencer clan are among the few free agents able to cross the battlelines between Prince William and Prince Harry, as the brothers’ feud appears to grow ever frostier in the wake of the Duke of Sussex’s firebrand claims about the royals in…