The Golden Globe nominee, 56, celebrated Coco’s 17th birthday Sunday by sharing some adorable throwback photos of the birthday girl through the years.
“People will say, ‘Why do you let Coco wear so much makeup?’ She’s been wearing makeup forever, that is a self-expression for her,” Cox said.
Cox and Arquette got married in June 1999 before they divorced in 2013.
“We’ve just had – not an easy time with it, we’ve just been really open and supportive of each other,” he added.