As many people as possible are being encouraged to dance, wiggle and giggle to raise money for the Henry Allen Appeal on Sunday.
Between 11am and 5pm Zumba, Zumba Gold and Zumbatomic for kids will be dancing in Midsummer Place between the Gap and Hollister stores and for everyone who takes part, event sponsors La Collina at The George Inn, Little Brickhill, will be donating £1.
So whether you join in for a few minutes, a few tracks or a few hours everyone is welcome.
Organisers are hoping they can get 1,000 people to visit on the day.
Zumba fans can buy a ticket for £5 and get to dance all day in the VIP area and be entered into a prize draw for Zumba items.