Rose Ayling-Ellis swapped her partner Giovanni Pernice for another dancer during rehearsals for the Strictly Come Dancing tour.
The EastEnders actress, 27, will dance with Giovanni, 31, when the tour kicks off tomorrow, but she was spotted practising with co-star John Whaite.
In scenes in which host Janette Manrara joked the cast had "gone mad", several of the group had swapped their partners as they prepared for tomorrow.