They share two children, Apple and Moses, who they vowed at the time of their split to co-parent together.
Apple, now 21, is a model and student at Vanderbilt University, in Tennessee, while Moses, 19, is atBrown University, in Rhode Island, also in the United States.
Paltrow told Hahn the youngsters hadn’t attended the ceremony, which she said only a small group was present for.
“I can’t even remember the whole thing. It was like our best friends came with us, and there was like a prayer, and it was pretty beautiful.”
When Hahn asked what the service involved, the pair joked about full face tattoos, presumably in reference to traditional tā moko tattooing.
The Wandavision star said Paltrow had “been covering it up so well”, as Paltrow joked she had “a Coldplay tattoo” on her face.
Paltrow is now married to Glee co-creator Brad Falchuk, and Martin is rumoured to be in a relationship with Game of Thrones actress Sophie Turner.