The No Doubt frontwoman "liked" a tweet that Miranda posted about her grandmother on Dec. 26. Many Twitter users noticed the social media action, even though Gwen doesn't follow her on Twitter.
"Her name embroidered inside is priceless," the country cutie tweeted with a link to an Instagram picture of herself with her grandma, as well as a coat that Miranda has inherited. "A family heirloom I will cherish forever."
Many tabloids have pitted the two beauties against each other ever since Gwen began dating Blake Shelton following his divorce with Miranda. Last month, Miranda began following Gwen on the social media site.
Like Blake, Miranda is moving on from her marriage and has begun dating singer-songwriter Anderson East. On Jan. 2, she posted an image of her and her new man to Instagram cuddling up on a couch.
"The snuggle is real... @andersoneast," she wrote of the image.
Just a week prior, Gwen and Blake were seen looking smitten and taking selfies on the sidelines at an Arizona Cardinals football game.
In December Miranda opened up to Cosmopolitan about her split, saying, "I just want to live a life full of everything. Some of that might mean nights on my porch crying, drinking whiskey and going, 'Man this sucks right now.'"
She added, "I don't necessarily want to know that I have really bad, long, lonely nights ahead of me, but I have had some, and I still have a bunch ahead of me."