By Amber Goodhand - Radar Reporter
The Overboard actress talked to ES magazine of the London Evening Standard about what a great mother Kate is, and accidentally let it slip that she and Matt have tied the knot.
"My kids are fantastic with their children, they have an amazing parental ethic and I'm very proud of them for that," Goldie said.
"When my daughter Kate married an English rock star Matt Bellamy it didn't worry me; all that matters is that the relationship is a good one."
As far as the general public is concerned, Kate and Matt announced their engagement on April 27, 2011, but never made their walk down the aisle known.
The couple gave birth to their first child together, Bingham Hawn Bellamy, just three months later.
"What people do is not necessarily who they are," Goldie told the magazine, defending Matt's rock star status.
"Kate hasn't picked up too many English mannerisms, she's held on to her identity quite well."
Do you think Kate and Matt are really married, or Goldie just had a slip of the tongue? Leave your comments below.
Kate Hudson's Dad: 'Goldie Hawn Turned Our Split Into An Ugly Media War'