From the a-list to the D-List, a who's who of New Zealand celebrity turned out for Colin Mathura-Jeffree's 40th birthday bash last night.

Hundreds of the TV personality's friends dressed up for the masquerade ball at the Wharf in Northcote Point.

The birthday boy kept it simple with a chic black devil-looking mask while others went for large feathers and venetian-styled masks.

Mother-daughter duo Sally and Jaime Ridge were there, TV film crew in tow.

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Guests were treated to cocktails, canapes - and confidentiality documents to sign.