Lynda Topp and partner in Parliament tonight for marriage equality bill

Donna Luxton and Linda Topp celebrate the final reading of the Marriage Amendment Bill at Parliament. Photo / Mark Mitchell

Entertainer Lynda Topp and partner Donna Luxton will be in Parliament tonight to show support for marriage equality.

Topp, one half of country music duo the Topp Twins, and Ms Luxton said in a written statement to media that the term civil union is demeaning, and they were adamant "marriage'' was the correct word to describe their union.

"That is how Donna and I see it,'' said Ms Topp.

They were married at their home in Staverley, in the foothills of the Southern Alps in March.

She said the term "civil union'' came with the idea that you would never be good enough. "That your love is somehow less than, or not as worthy.

"There's no romance to it.

"If someone had told me a few years ago that at 54 I would be married with two stepsons, I'd have laughed.''

Topp said she thinks everybody should be able to stand up and say, 'I'm getting married'.

"Today, I feel more romantic and more in love than I've ever felt in my life. Our marriage is as honest, loyal and committed as anyone's, and we should have the same rights as anyone else.''

Topp issued a statement in March blasting an anti-gay marriage group for trying to hijack her ceremony.

Family First leader Bob McCoskrie tried to use Topp's ceremony to make a point for his cause.

In his blog on March 1, with links to Protect Marriage NZ, Mr McCoskrie congratulated Topp and Luxton for choosing a civil union. He said by doing so they showed there was no need to legalise gay marriage.

Topp, replied: "WRONG. We do not believe in civil union. It is discrimination, my partner and I are getting married, so there. PS, would appreciate if it this website did not use our good name to promote ... anti-marriage views for the gay and lesbian community.''

Mr McCoskrie removed his comments and thanked Topp for "clarifying''.