"She just sang at David's wedding, because David got married last week, and she sang two songs. She's loving this wedding stuff," she laughs. "She's a really good singer. I don't know where she got it."
Courteney and Johnny, 38, announced their engagement last June, and have been dating since late 2013. The Cougar Town actress also showed off her engagement ring to Ellen, designed by both David and jewelry designer Jennifer Meyer.
"It just shows Johnny, myself and Coco," she explains about the sentimental ring. "It's sweet."