The Mayor of Hebden Royd Coun Karl Boggis was invited to celebrate the centenary of the Brownies.
Five hundred girls attended the space theme Star Quest party at North Bridge Leisure Centre in Halifax.
The girls also enjoyed disco dancing with the Mayor joining in on the fun.
Group disco dancing, “design an outfit to fly to the stars” and “design a new planet” competitions added to the excitement of the day.
Q rocket a rocket shaped cake was enjoyed by all.
A Calderdale Brownie leader and County President Yvonne Tooby said: “It was a great start to the 100 year celebrations.
“It was a brilliant party which was really well organised and well attended.”