The Spice Girls said they were "excited, humbled and proud" to be at the musical inspired by their music Viva Forever!
The singers also praised the writer Jennifer Saunders as well as the cast of the musical.
More top news
Vic Reeves and Bob Mortimer have promised 'uplifting moments', 'some magic' and 'dancing styles' on their first tour for two decades.
Another freezing, frosty and icy night ahead but this will be followed by a dry and sunny day for most tomorrow.
Phone hacking was "rife" at the Daily and Sunday Mirror newspapers and the People by mid-1999 at the latest, the High Court has heard.