According to Insider and Huffington Post, Costello posted the images on his now-private Instagram account Monday, writing in the caption that Teigen accused him of racism in an Instagram comment at the time.
But on Friday, Teigen shared a statement claiming Costello’s purported screenshots contain inconsistencies proving they are doctored.
“Chrissy has acknowledged her past behavior and the pain she has caused, but she will not stand for anyone spreading false accusations to further demean her name and reputation.
“If someone were to say anything about my family, I would defend them to the max.
Last month, Teigen was exposed for publicly harassing Courtney Stodden, who was told to kill themself when they were 16.
“Not a day, not a single moment has passed where I haven’t felt the crushing weight of regret for the things I’ve said in the past,” Teigen wrote.