Burgess Hill District Lions are celebrating their 60th anniversary on Saturday.
The day will be opened by town mayor Anne Jones at Burgess Hill bandstand, followed by Burgess Hill Marching Youth performances at 11am and 11.40am on Church Walk.
Next will be a birthday card competition prize giving at 2.15pm at the Martlets Hall.
A fancy dress competition for age groups 3-7 and 8-11 will be judged, with winners revealed at 2.45pm.
Winners will receive £25 in each category, with runners up winning a prize of £10.
Activities will include a free bouncy castle, arts and crafts stalls, food stalls, club stalls and Mid Downs Radio.