The event was staged at Antrim Castle Gardens.
Check out these 18 amazing photos from the festivities.
1. Party in the park
Princess Belle, Demi and Princess Aurora. Photo: Antrim and Newtownabbey Borough Council
2. Party in the park
Harlow enjoying Sunday's event. Photo: Antrim and Newtownabbey Borough Council
3. Party in the park
Mayor of Antrim and Newtownabbey, Cllr Mark Cooper with Event Heroes staff and Grace, Lyla Rose and Alex. Photo: Antrim and Newtownabbey Borough Council
4. Party in the park
Emily with her mum, Grace and Mayor, Cllr Mark Cooper. Photo: Antrim and Newtownabbey Borough Council